Peter L. Christiansen:
INTERNATIONAL COLLABORATION AND CONTACTS

Extended Visits

• Polish Academy of Sciences, Warsaw:
  Instytut Podstawowych Problemow Techniki, 2 weeks (1972)
  Instytut Fizyki, 1 week (1983)
• V. A. Steklov Mathematics Institute, Academy of Sciences of the USSR, St. Petersburg and Moscow, 2 weeks (1982)
• Guest Professorship at Consiglio Nazionale delle Ricerche, Italy
  1 month (1985) and 1 month (1987)
• Institute for Mathematics and its Applications, University of Minnesota, Minneapolis, U.S.A., 1 month (1988)
• Program of Applied Mathematics, University of Arizona, Tucson, U.S.A., 2 months (1988-89)
• Center for Nonlinear Studies, Los Alamos National Laboratory, N. M., U.S.A., 2 months (1989), 1 week (1995)
• Institute of Mathematics, Fudan University, Shanghai, China, 1 week (1989)
• Mechanics Department, Zhejiang University, Hangzou, China, 1 week (1989)
• Department of Mathematics, Beijing University of Aeronautics and Astronautics and Institute of Applied Physics and Computational Mathematics, Beijing, China, 2 weeks (1989)
• Dipartimento de Matematica e Applicazioni, Università di Napoli, Italy, 4 months (1989)
• Department of Mathematics, University of Patras, Greece, 2 weeks (1990)
• Department of Physics, University of Alberta, Edmonton, Canada, 1 month (1995)
• Optical Sciences Centre, Australian National University, Canberra, Australia, 1 month (1996)
• Department of Physics, University of Madeira, Funchal, Portugal, 1 week (1997)

Shorter Visits and Guest Lectures

• Courant Institute of Mathematical Sciences, New York University (4 times)
• Department of Electrical Engineering, Syracuse University, N. Y.
• ESSA, Boulder, Colorado
• National Research Council, Ottawa
• Mathematical Department, SUNI, Stony Brook, N. Y.
• Matematisk/teknisk fysiska Sektionsgruppen, Chalmers Tekniska Högskola, Gothenburg
• Polish Academy of Sciences, Warsaw
• Chinese University, Hongkong
• School of Mathematics, University of New South Wales, Sydney
• Department of Mathematics and Computer Science, Clarkson College, Potsdam, N. Y.
• Mathematics Research Center, University of Wisconsin, Madison
• Department of Mathematics, University of British Columbia, Vancouver
• Jet Propulsion Laboratory, Caltech, Pasadena
• Department of Mathematics, UMIST, Manchester
• Mathematical Institute, University of Oxford
• School of Mathematics, University of Newcastle-upon-Tyne
• Department of Mathematics, Heriot-Watt University, Edinburgh (2 times)
• Department of Mathematical Physics, Birmingham University
• Department of Mathematics, Imperial College, London
• V. A. Steklov Mathematics Institute, St. Petersburg
• V. A. Steklov Mathematics Institute, Moscow
• Laboratory of Computing Techniques and Automation, Joint Institute for Nuclear Research, Dubna
• Center for Nonlinear Studies, Los Alamos National Laboratory, N. M. (7 times)
• Department of Mathematics, Waterloo University
• Department of Applied Mathematics, University of Western Ontario
• Department of Mathematics, University of Chicago
• Department of Physics, Rensselaer Polytechnic Institute, Troy, N. Y.
• ASEA, Västerås, Sweden
• Dipartimento di Fisica, Università di Salerno (7 times)
• Mathematics Department, University of Pittsburgh, Penn.
• Mathematics Department, Georgia Institute of Technology, Atlanta
• Mathematics Department, Cornell University, Ithaca, N. Y.
• Nippon Telegraph and Telephone Public Cooperation, Electrical Communication Laboratories, Tokyo
• Department of Physics, University of Tokyo
• Matematiske Institutionen, Uppsala University
• Dipartimento di Fisica, Università di Roma (2 times)
• Dipartimento di Matematica, Università di Cosenza
• Dipartimento di Fisica, Università di Milano
• Institutionen för nationalekonomi, Umeå University
• Department of Mathematics, University of Arizona, Tucson (3 times)
• Department of Mathematics, Ohio State University, Columbus (2 times)
• Thermophysics Department, Uzbek Academy of Sciences, Tashkent
• Institute of Nonlinear Science, University of California, San Diego, U.S.A.
• Dipartimento di Matematica, Università di Bari
• Istituto di Cibernetica, Arco Felice
• Dipartimento di Fisica, Università: di Perugia
• Physique Non Linéaire OSE, Faculté des Sciences et Techniques, Université de Bourgogne, Dijon
• Physics Department, Peking University, Beijing
• Institute for Theoretical Physics, Ukrainian Academy of Sciences, Kiev
• L. D. Landau Institute, Institute of Theoretical Physics, Moscow
• Institute of Spectroscopy, Troitsk
• Institute of Physics, Bayreuth
• Department of Physics, University of Illinois, Urbana
• Department of Physics and Astronomy, University of New Mexico, Albuquerque
• Institute for Theoretical Physics, Heinrich-Heine University, Düsseldorf
• Department of Physics, University of Crete, Heraklion, Crete
• Department of Physics, University of Linköping, Linköping
• Department of Mathematics, Monash University, Melbourne

International Networks and Research Projects

also listed under Grants from external sponsors


• "Wave turbulence, condensation and collapses: theory, numerics and applications in nonlinear optics, plasmas and fluids" (1997-)
  Collaboration between: J. Juul Rasmussen, Denmark, P.L. Christiansen, Denmark, P.-L. Sulem, France, L. Bergé, France, V.E. Zakharov, Russia, and E.A. Kuznetsov, Russia
  Co-ordinator: J. Juul Rasmussen
  Sponsor: INTAS
  
  
• "Nonlinear Localized Modes in Complex Systems with Noise and Disorder" (1997-)
  Collaboration between: G.P. Tsironis, Greece, P.L. Christiansen, Denmark, S. Aubry, France, A.V.Zolotaryuk, Ukraine, A.V. Savin, Russia, and F.M. Izrailev, Russia
  Co-ordinator: G.P. Tsironis
  Sponsor: INTAS
  
  
• "Energy localization and collapse with applications" (1994-97)
  Collaboration between: P.L. Christiansen, Denmark, V.E. Zakharov, Russia, E.A. Kuznetsov, Russia, S. Turitsyn, Russia, J. Juul Rasmussen, Denmark, and Y. Pomeau, France
  Co-ordinator: P.L. Christiansen
  Sponsor: INTAS
  
  
• "Self-Trapping and Superconductivity" (1994-97)
  Collaboration between: E.N. Economu, Greece, G.P. Tsironis, Greece , P.L. Christiansen, Denmark, J. C. Eilbeck, UK, S. Aubry, France, A.V.Zolotaryuk, Ukraine, V.G. Baryakhtar, Ukraine ,and A.V. Savin, Russia
  Co-ordinator: E.N. Economu
  Sponsor: INTAS
  
  
• "Nonlinear approach to coherent and fluctuating processes in condensed matter and optical physics" (1993-96)
  Collaboration between: E.N. Economu, Greece , G.P. Tsironis, Greece , T. Bountis, Greece , S. Aubry, France, F. Fillaux, France , R.S. MacKay, UK, L.M.Floría, Spain, J.M. Sacho, Spain, L. Vázquez, Spain , R. Manella, Italy, and P.L. Christiansen, Denmark
  Co-ordinator: E.N. Economu
  Sponsor: EEC Human Capital and Mobility Programme
  
  
• "Classical and quantum chaos in coupled, nonlinear oscillators" (1990-92)
  Collaboration between: J.C. Eilbeck, UK, D.W. McLaughlin, USA , and P.L. Christiansen, Denmark
  Co-ordinator: J.C. Eilbeck
  Sponsor: NATO Scientific Affairs Division
  
  
• "Transport properties in nonlinear condensed matter physics" (1989-93)
  Collaboration between: P.L. Christiansen, Denmark, G. Careri, Italy, S. Pnevmatikos and G.P. Tsironis, Greece, S. Aubry, France, J.C. Eilbeck, UK, and G. Zundel, Germany
  Co-ordinator: P.L. Christiansen
  Sponsor: EEC Science Programme
  
  
• "Stimulated Nonlinear Effects in Josephson Devices" (1987-90)
  Collaboration between: G. Reinisch, France and P. Encranez, France, M. Russo, Italy, G. Costabile, Italy, N.F. Pedersen, Denmark, P.L. Christiansen, Denmark, and S. Pnevmatikos, Greece
  Co-ordinator: G. Reinisch
  Sponsor: EEC Stimulation Programme
  
  
• "Joint research project between IBM and LAMF, DTU" (1985-90)
  Research Collaboration between: P.L. Christiansen, Denmark, M.P. Sørensen, Denmark and Switzerland and T. Schneider, Switzerland
  Organizer: Johan Teglhøj, IBM Denmark
  Sponsor: IBM Denmark and IBM Zürich Research Laboratory
  
  
• "Coherence and Chaos Phenomena in the Josephson Oscillator" (1985-89)
  Collaboration between: P.L. Christiansen, Denmark, R.D. Parmentier, Italy, and and O. Skovgaard, Denmark
  Contractor: P.L. Christiansen
  Sponsor: United States Army European Research Office, London
  
  
• "Computer Dynamics Study of Nonlinear Interaction in Protein Models" (1985-87)
  Collaboration between: P.L. Christiansen, Denmark and G. Careri, Italy
  Co-ordinator: P.L. Christiansen
  Sponsor: EEC Stimulation Programme
  
  
• "Non-linear wave phenomena in Josephson elements for superconducting electronics" (1982-85)
  Collaboration between: P.L. Christiansen, Denmark, R.D. Parmentier, Italy, and and O. Skovgaard, Denmark
  Contractor: P.L. Christiansen
  Sponsor: United States Army European Research Office, London

Formal Collaboration Agreements

• Optical Sciences Centre, Australian National University, Canberra
• Center for Advanced Studies, University of New Mexico, Albuquerque, USA
• Centre National de Recherche Scientifique, Paris, France
• Danish Institute for Fundamental Metrology, Lyngby, Denmark
• IBM Zürich, Switzerland
• Landau Institute for Theoretical Physics, Moscow, Russia
• Department of Mathematics, University of Naples, Italy
• Department of Theoretical Physics, Institute of Metallurgy, Kiev, Ukraine
• Mathematics Department, Heriot-Watt University, Edinburgh, Scotland
• Mathematics Department, University of Arizona, Tucson, USA
• Center for Nonlinear Studies, Los Alamos National Laboratory, USA
• Institute for Theoretical Physics, Kiev, Ukraine
• Physics Department, Academy of Sciences, Tashkent, Ukraine

Organization of International Conferences and Workshops

1. Official Inauguration of the Center for "Modelling, Nonlinear Dynamics, and Irreversible Thermodynamics", DTU, 4 December, 1985, organized by Peter L. Christiansen
   Invited speaker: David K. Campbell, Center for Nonlinear Studies, Los Alamos National Laboratory
   About 100 participants
   Sponsor: Thomas B. Thriges Foundation
   
   
2. Structure Coherence and Chaos in Dynamical Systems, DTU, Lyngby, 12-16 August, 1986, organized by Peter L. Christiansen, R. D. Parmentier, and A. C. Scott
   31 invited speakers and 80 posters. 159 participants from 23 countries
   Sponsors: U S Army European Research Office, Danish Natural Science Research Council, Danish Technical Research Council, Thomas B. Thriges Foundation, Otto Mønsteds Foundation, IBM Denmark A/S, NORDITA, and MIDIT
   
   
3. NATO Advanced Research Workshop on Self-Trapping of Vibrational Energy, in Protein, Hanstholm, Denmark, 30 July-4 August 1989 , organized by Alwyn C. Scott and Peter L. Christiansen
   38 lectures and 8 posters. 43 participants from 14 countries
   Sponsors: NATO Scientific Affairs Division, Special Programme on "Chaos, Order amd Patterns" and Danish Natural Science Research Council
   
   
4. 1st European Science Foundation Non-Linear Systems Study Centre on Transport Properties in Non-Linear Condensed Matter Physics, MIDIT, Lyngby, Denmark, 7-25 August, 1989, organized by Peter L. Christiansen and Alwyn C. Scott
   Sponsor: European Science Foundation, Network on Non-linear Systems
   41 lectures and 18 discussion hours. 45 participants from 15 countries
   
   
5. Future Directions of Nonlinear Dynamics in Physical and Biological Systems, DTU, Lyngby, Denmark, 23 July - 1 August, 1992, organized by Peter L. Christiansen and Robert D. Parmentier
   49 speakers and 100 posters. 168 participants from 23 countries
   Sponsors: NATO Scientific and Environmental Affairs Division, U S Army European Research Office, U S Army American Research Office, National Science Foundation, Danish Technical Research Council, NORDITA, COWI Foundation, and DTU (MIDIT)
   
   
6. ICCP'94 IMACS 3rd International Conference on Computational Physics: Nonlinear Dynamical Phenomena in Physical, Chemical and Biological Systems, DTU, Denmark, 1-4 August, 1994 organized by Peter L. Christiansen, Erik Mosekilde, and Mads Peter Sørensen
   39 speakers and 15 posters. 72 participants from 17 countries
   Sponsors: Danish Natural Science Research Council, Danish Technical Research Council, COWI Foundation, and Technical University of Denmark (MIDIT)
   
   
7. Complex Dynamics in Spatially Extended Systems, Niels Bohr Institute, Copenhagen, Denmark, 27-30 September, 1995, organized by Tomas Bohr, Jens Juul Rasmussen, Erik Mosekilde, and Peter L. Christiansen
   51 speakers and 48 posters. 126 participants from 19 countries.
   Sponsors: Danish Natural Science Research Council, Danish Technical Research Council, Thomas B. Thriges Foundation, the Niels Bohr Foundation, Center for Chaos and Turbulence Studies (CATS) at the Niels Bohr Institute, Center for Nonlinear Dynamics in Continuum Systems at Risø National Laboratory, and Modelling, Nonlinear dynamics, and Irreversible Thermodynamics (MIDIT) at Technical University of Denmark
   
   
8. Solitons and Coherent Structures in Physics and Biology, DTU, Lyngby, 30 May - 3 June, 1997, organized by Peter L. Christiansen and Mads Peter Sørensen.
   53 speakers and 15 posters. 75 participants from 20 countries.
   Sponsors: Danish Technical Research Council, Danish Natural Research Council, Thomas B. Thriges Foundation, Risø National Laboratory and MIDIT, DTU

Conference Participations with Presentations

(presented by the (first) author in the parenthesis after the title)
1. "Scattering of Short Electromagnetic Waves by a Circular Cylinder of Warm Plasma" (P. L. Christiansen) URSI Symposium on Electromagnetic Wave Theory, September 6-11, 1965, Delft, Holland
2. "Diffraction of a Creeping Wave by a Discontinuity in the Surface Impedance of a Smooth Body" (P. L. Christiansen) URSI Spring Meeting, April 18-21, 1966, Washington, DC, U.S.A.
3. "Excitation of Creeping Waves by Mode Conversion of a Critically Incident Ray" (P. L. Christiansen) G-AP International Symposium, October 17-19, 1967, Ann Arbor, Michigan, U.S.A
4. "Resonant Interaction Approach and Slowly Varying Approach in Nonlinear Wave Propagation" (P. L. Christiansen) URSI Symposium on Electromagnetic Waves, June 20-30, 1969, Stresa, Italy (invited talk)
5. "Surface Diffraction and Mode Conversion" (P. L. Christiansen) SIAM National Meeting, June 29-July 1, 1970, Denver, Colorado, U.S.A.
6. "Elementary Diffraction Coefficients in the Geometrical Theory of Diffraction" (P. L. Christiansen) International Symposium on Electromagnetic Wave Theory, September 9-15, 1971, Tbilisi, U.S.S.R.
7. "Geometical Diffraction Theory: Application of Elementary Diffraction Coefficients and Uniform Representations" (in Danish) (P. L. Christiansen) Radiovetenskaplig Konferens 72, May 29-31, 1972, Lund
8. "Current Electromagnetic Research in Denmark" (P. L. Christiansen) International IEEE/G-AP Symposium and USNC/URSI Meeting, August 21-24, 1973, Boulder, Colorado, U.S.A. (invited talk)
9. "Diffraction of Gravity Waves by Large Islands" (P. L. Christiansen) 14th International Conference on Coastal Engineering, June 24-28, 1974, Copenhagen
10. "Diffraction of Creeping Waves by an Edge" (N. C. Albertsen and P. L. Christiansen) URSI Symposium on Electromagnetic Wave Theory, July 9-12, 1974, London
11. "Application of Ray Methods for Computation of Water Waves on Varying Sea Depth and in Harbours" (in Danish) (P. L. Christiansen) Symposium i Tillämpad Matematik, "Behandlingsmetoder för differentialekvationer och angränsande problem", April 2-4, 1975, Gothenburg
12. "Computations of Harbor Oscillations by Ray Methods" (J. Larsen and P. L. Christiansen), Symposium on Modeling Techniques, September 3-5, 1975, San Francisco, California, U.S.A.
13. "Diffraction of Gravity Waves by Ray Methods" (P. L. Christiansen) IUTAM Symposium on Surface Gravity Waves on Water of Varying Depth, July 20-23, 1976, Canberra, Australia (invited talk)
14. "Numerical Investigation of Creeping Waves in Water Wave Theory" (P. L. Christiansen and H. Bach) GAMM/DCAMM Congress, May 31-June 3, 1977, DTU, Lyngby
15. "On Dynamical Two-Dimensional Solutions to the Sine-Gordon Equation" (P.L. Christiansen and O.H.Olsen) GAMM Annual Scientific Conference, March 28-31, 1978, Bruxelles, Belgium
16. A Bäcklund Transformation for the 3+1 Dimensional Sine-Gordon Equation" (P.L. Christiansen) 8th International Conference on Nonlinear Oscillations, September 11-15, 1978, Institute of Thermodynamics, Czechoslovak Academy of Sciences, Prague, Czechoslovakia
17. "Application of a new Bäcklund Transformation for the 3+1 Dimensional Sine-Gordon Equation" (P.L. Christiansen) GAMM Annual Scientific Conference, April 16-21, 179, Wiesbaden, Germany
18. "Soliton and Quasi-Soliton Solutions to the Sine-Gordon Equations" (P.L. Christiansen and O. H. Olsen) Danish Physical Society Spring meeting, May 28-29, 1979, Middelfart, Denmark
19. "Soliton and Quasi-Soliton Solutions to the Sine-Gordon Equation" (P.L. Christiansen) 4th Scheveningen Conference on Differential Equations, August 23-31, 1979, Scheveningen, Holland (invited talk)
20. "Two- and Three-Dimensional Solitons" (P.L. Christiansen) Engineering Foundation Conference on New Approaches to Nonlinear Problems in Dynamics, December 9-14, 1979, Pacific Grove, California, U.S.A.
21. "Two- and Three-Dimensional Solitons" (P.L. Christiansen) International Conference on Nonlinear Dynamics, December 17-21, 1979, The New York Academy of Sciences, New York, U.S.A.
22. "Fluxons on Imperfect Josephson Lines" (P.L. Christiansen and O. H. Olsen) Danish Physical Society Spring Meeting, May 30-31, 1980, Elsinore, Denmark
23. "Sine-Gordon Solitons on Josephson Lines and in 2+1 and 3+1 Dimensions" (P.L. Christiansen) Workshop on Nonlinear Evolution Equations and Dynamical Systems, July 9-23, 1980, Chania, Crete, Greece
24. "Bunched Multisolitons on Long Josephson Junction Oscillators" (P.L. Christiansen, P. Lomdahl, and O. H. Sørensen) Danish Physical Society Spring Meeting 1981, May 21-22, 1981, Risø National Laboratory
25. "Soliton Dynamics and Zero Field Steps in Josephson Tunnel Junction" (P.L. Christiansen, P. Lomdahl, and O. H. Sørensen) Nordic Solid State Physics Conference, August 10-12, 1981, H. C. Ørsted Institute, University of Copenhagen, Denmark
26. "Fluxon Dynamics in Intermediate Length Josephson Tunnel Junctions" (O. H. Sørensen, P. Lomdahl, and P.L. Christiansen) XVI International Conference on Low Temperature Physics, LT-16, August 19-25, 1981, University of California, Los Angeles, U.S.A. P. Lomdahl, and O. H. Sørensen)
27. "Reverse Bifurcation for Difference Equations" (P.L. Christiansen) Workshop on Nonlinear Evolution Equations Solitons and Spectral Methods, August 24-29, 1981, International Centre for Theoretical Physics, Trieste, Italy
28. "1+1 and 2+1 Dimensional Sine-Gordon Solitons" (P.L. Christiansen) Workshop on Nonlinear Evolution Equations Solitons and Spectral Methods, August 24-29, 1981, International Centre for Theoretical Physics, Trieste, Italy
29. "On Chaos and Reverse Bifurcations in Discrete Systems and Quasi-Solitons on Elastic Rods" (P.L. Christiansen) Nonintegrable Systems and Transition to Chaos, April 15-16, 1982, Culham Laboratory, Oxford, England
30. "Sine-Gordon Application to Josephson Junctions" (P.L. Christiansen) International Conference on Solitons in Real Systems, June 17-26, 1982, Nice and Cargèse, France (invited talk)
31. 'Transition to Chaos: Forward and Reverse Bifurcations" (P.L. Christiansen) International Conference on Solitons in Real Systems, June 17-26, 1982, Nice and Cargèse, France (invited talk)
32. "Sine-Gordon Solitons I" (P.L. Christiansen) Second World Conference on Mathematics at the Service of Man, June 28-July 3, 1982, Canary Islands, Spain (invited talk)
33. "Chaos in Discrete Systems. Sine-Gordon Solitons II" (P.L. Christiansen) Second World Conference on Mathematics at the Service of Man, June 28-July 3, 1982, Canary Islands, Spain (invited talk)
34. "Sine-Gordon Solitons" (P.L. Christiansen) Solitons '82 Scott Russell Centenary Conference, August 22-September 3, 1982, Edinburgh, Scotland (invited talk)
35. Sine-Gordon Solitons and Josephson Junctions" (P.L. Christiansen) Integrable Seminar, NORDITA, September 13-24, 1982 Copenhagen, Denmark
36. "Solitons on Mechanical Structures" (P.L. Christiansen) Euromech 166: Focussing of Mechanical Waves in Continuous Media, March 28-30, 1983, Aachen, West Germany (invited talk)
37. "Solitons Illustrated by Computer Movie" (P.L. Christiansen) Wave Phenomena: Modern Theory and Applications and Canadian Applied Mathematical Society Annual Meeting (Satellite Meetings on Asymptotic Expansions and Bifurcation Problems), June 20-24, 1983, Toronto University, Canada (invited talk)
38. "Chaos in Nerve" (J.H. Jensen, P.L. Christiansen, A.C. Scott, and O. Skovgaard) ACI 83, Applied Control & Identification, June 28-July 1, 1983, Copenhagen
39. "Solitons and Chaos Phenomena on Long Josephson Junctions" (P.L. Christiansen) Working Party on Solitons and Nonlinear Phenomena in Condensed Matter, July-August, 1983, International Centre for Theoretical Physics, Trieste, Italy (invited talk on August 9, 1983)
40. "Solitons and Chaos in Nearly Integrable Systems" (P.L. Christiansen) 2nd Workshop on Evolution Equations and Dynamical Systems, August 13-26, 1983, Chania, Crete, Greece
41. "Aspects of Modern Nonlinear Dynamics. Solitons and Chaos Phenomena" (P.L. Christiansen) URSI International Symposium on Electromagnetic Theory, August 23-26, 1983, Santiago de Compostela, Spain (invited general lecture)
42. "The Sine-Gordon System. Solitons and Chaos" (P.L. Christiansen) Solitons Physics, November 7-12, 1983, Georgenthal, DDR (invited talk)
43. "Solitons and Chaos in the Josephson Oscillator" (P. L. Christiansen) Danish Physical Society Spring Meeting 1984, Elsinore, Denmark, May 29-30, 1984
44. "Solitons and Chaos in Dynamical Systems" (O. Skovgaard, Peter L. Christiansen, F. If and M. P. Sørensen) 16th International Congress on Theoretical and Applied Mechanics, August 19-25, 1984, Lyngby, Denmark
45. "Solitons and Chaos in the Sine-Gordon System" (P. L. Christiansen) International Symposium on Selected Topics in Statistical Mechanics, August 22-26, 1984, Dubna, U.S.S R. (invited talks)
46. "Solitons and Chaos in the Sine-Gordon System" (P. L. Christiansen) 7th Kyoto Summer Institute "Dynamical Problems in Soliton Systems", August 27-31, 1984, Kyoto, j Japan (invited talk)
47. "X-band Radiation from Josephson Junctions in Magnetic Field" (M. P. Sørensen, R. D. Parmentier, P. L. Christiansen, O. Skovgaard, B. Dueholm, E. Jørgensen, V. P. Koshelets, O. A. Levring, R. Monaco, J. Mygind, N. F. Pedersen, and M. R. Samuelsen) Applied Superconductivity Conference 1984, September 9-13, 1984, San Diego, U.S.A. (poster)
48. "Solitons and Chaos In Josephson Junctions" (P. L. Christiansen) Danish Physical Society, Solid State Physics Section, Winter School, January 28-31, 1985, H. C. Ørsted Institute, University of Copenhagen (invited talk)
49. "Fractal dimensions for solutions to low-dimensional discrete self-trapping equation" (P. L. Christiansen, J. Halding, and O. Skovgaard) Danish Physical Society, Spring Meeting 1985, May 14-15, 1985, The Niels Bohr Institute, University of Copenhagen
50. "Prediction of chaos in a Josephson junction by the Melnikov technique" (M. Bartuccelli, P. L. Christiansen, and N. F. Pedersen) Danish Physical Society, Spring Meeting 1985, May 14-15, 1985, The Niels Bohr Institute, University of Copenhagen
51. "Application of soliton effects" (P. L. Christiansen) 3rd Workshop on Nonlinear Evolution Equations and Dynamical Systems, June 20-July 5, 1985. Baia Verde Gallipoli, Italy (invited talk)
52. "On coherence and chaos in a physical system" (P. L. Christiansen) 11th IMACS World Congress on System Simulation and Scientific Computation, August 5-9, 1985, University of Oslo (invited talk)
53. "Solitons and chaos in a physical system" (P. L. Christiansen) Nordic Symposium on Nonlinear waves in Plasmas, August 13-16, 1985, Risø National Laboratory (invited talk)
54. "Solitons and chaos in the sine-Gordon system (P. L. Christiansen) 10th Summer School in Mathematical, September 4-24, 1985, Ravello, Italy (invited talk)
55. "Solitons and chaos in the sine-Gordon system (P. L. Christiansen) 3rd Meeting on Waves and Stability in Continuous Media, October 7-12, 1985, Bari, Italy (invited talk)
56. "Stability of Dynamic States in Josephson Junctions" (P. L. Christiansen, S. Pagano, M. P. Sørensen, R. D. Parmentier, F. If, M. Fordsmand, O. Skovgaard, J. Mygind, N. F. Pedersen, and M. R. Samuelsen) Workshop on Spatio-Temporal Coherence and Chaos in Physical Systems, January 21-24, 1986, Center for Nonlinear Studies, Los Alamos National Laboratory, N.M., U.S.A. (invited poster)
57. "The soliton laser" (P. L. Christiansen, F. If, J. N. Elgin, J. D. Gibbon, and O. Skovgaard) Workshop on Spatio-Temporal Coherence and Chaos in Physical Systems, January 21-24, 1986, Center for Nonlinear Studies, Los Alamos National Laboratory, N.M., U.S.A. (poster)
58. "Modelling of Temperature Effects on the Ion Permeability and Bilayer Lipid Membranes" (L. Cruzeiro, P.L. Christiansen, and O.G. Mouritsen) Workshop Faraday Discussion No. 81 - Lipid Vesicles and Membranes, April 15-17, 1986, Loughborough, U.K. (poster)
59. "Computer Dynamics Study of Nonlinear Interaction in Protein Models" (P.L. Christiansen) EEC-Stimulation-Action-Contractors Conference, May 5-6, 1986, Bruxelles, Belgium (invited talk)
60. "Coherent Excitations in Some Physical and Biological Systems" (P.L. Christiansen) 9th Dundee Conference on the Theory of Ordinary Differential Equations, June 30-July 4, 1986, Dundee University, Scotland (invited talk)
61. "Numerical Model of Mollenauer's Soliton Laser (F. If, P. Berg, P. L. Christiansen and O. Skovgaard) MIDIT 1986 Workshop on Structure, Coherence and Chaos in Dynamical Systems, August 12-16, 1986, DTU, Lyngby (poster)
62. "Subharmonic and Heteroclinic Bifurcations in a Pendulum with Variable Length (V. Muto, M. Bartuccelli, P. L. Christiansen, M.P. Sørensen, and N.F. Pedersen) MIDIT 1986 Workshop on Structure, Coherence and Chaos in Dynamical Systems, August 12-16, 1986, DTU, Lyngby (poster)
63. "Stability of Dynamical States in Josephson Junctions" (S. Pagano, R.D. Parmentier, P. L. Christiansen, F. If, M. Fordsmand, and O. Skovgaard) MIDIT 1986 Workshop on Structure, Coherence and Chaos in Dynamical Systems, August 12-16, 1986, DTU, Lyngby (poster)
64. "Instabilities and Chaos in Josephson junctions" (P.L. Christiansen) Workshop on Nonlinear Dynamics and Chaos, August 25-30, 1986, Thessaloniki, Greece
65. "Perturbation of Integrable Systems and the Melnikov Method" (P.L. Christiansen) EUROMECH 216, Integrable Systems in Nonlinear Analytical Mechanics, September 22-25, 1986, Leeds University, U.K.
66. "Temperature Stability of Davydov Solitons" (L. Cruzeiro, P.L. Christiansen, J. Halding, O. Skovgaard, and A.C. Scott) Physics in Biology, November 12-13, 1986, DTU, Lyngby (poster)
67. "Lipid membrane Phase Transitions and Ion Permeability (L. Cruzeiro, P.L. Christiansen, and O.G. Mouritsen) Physics in Biology, November 12-13, 1986, DTU, Lyngby (poster)
68. Temperature Stability of Davydov Solitons (L. Cruzeiro, P.L. Christiansen, J. Halding, O. Skovgaard, and A.C. Scott) NATO ARW Workshop Chaos in Biological Systems, December 8-12, 1986, Cardiff, U.K. (poster)
69. "Instabilities in Josephson Junction Lines, (P.L. Christiansen) First Workshop of the EEC Josephson Project, May 20-22, 1987, La Brigue, France
70. "How Stable are Strongly Non-linear Solitons?" (P.L. Christiansen) 12th Summer School of Mathematical Physics, September 14-26, 1987, Ravello, Italy
71. "Solitary Waves on Nonlinear Elastic Rods" (P. L. Christiansen, Mads Peter Sørensen, and Virginia Muto) IUTAM-IUPAP Symposium on Elastic Wave Propagation, University College, Galway, Ireland, March 20-25, 1988
72. "Stability of Sine-Gordon Solitons" (P.L. Christiansen) 4th Meeting on Waves and Stability in Continuous Media, October 5-10, 1987, Taormina, Italy (invited speaker)
73. "Nonlinear Interactions between Intra- and Inter-Molecular Vibrations in Hydrogen-Bonded Polypeptide Chains" (B. M. Pierce, N. Østergaard, O. Faurskov Nielsen, and P. L. Christiansen) Nordiske Molekylfysikdage, May 26-27, 1988, Fuglsøcentret, Mols, Denmark
74. "Stability of Sine-Gordon Solitons" (P.L. Christiansen) 2nd Nordic Symposium on Nonlinear Phenomena in Plasmas and Related Topics, August 8-12, 1988, Risø National Laboratory
75. "Non-linear Dynamics of the Josephson Junction (P.L. Christiansen and Niels Falsig Pedersen) Singular Behaviour and Nonlinear Dynamics, August 12-26, 1988, Samos, Greece
76. "A Toda Lattice Model for DNA: Thermally Generated Solitons" (V. Muto, P.L. Christiansen, and A. C. Scott) 5th Annual University of California Conference on Nonlinear science, March 3-4, 1989, San Diego, U.S.A. (poster)
77. "A Generalized Discrete Self-Trapping Equation" (P.L. Christiansen, and A. C. Scott) 5th Annual University of California Conference on Nonlinear Science, March 3-4, 1989, San Diego, U.S.A. (poster)
78. "Higher Order Non-Linearities in Small Molecules: Classical and Quantum Mechanical Description" (P.L. Christiansen) International Conference on Nonlinear Physics, April 23-30, 1989, Shanghai, China
79. "Solitons in Biology. Ring Solitons" (P.L. Christiansen) Study Group meeting on Nonlinear Dynamical Properties of Ordered Molecular Layers and Cell Membranes, May 25-27, 1989, Capri, Italy
80. "A Toda lattice Model of DNA" (P.L. Christiansen) 6th Interdisciplinary Workshop on Nonlinear Coherent Structures in Physics, Mechanics and Biological Systems, June 21-23, 1989, Montpellier, France
81. "The generalized DST equation" (P.L. Christiansen) NATO/MIDIT Advanced Research Workshop, July 30-August 4, 1989 Hanstholm, Denmark, 1989
82. "Solitons in Optical Fibres" (P.L. Christiansen) Venice-1 Symposium on Applied and Industrial Mathematics, October 2-6, 1989, Venice, Italy
83. "Solitary Waves on a Toda Lattice with a Transverse Degree of Freedom" (P.L. Christiansen) 5th International Conference on Waves and Stability in Continuous Media, October 9-14, 1989, Sorrento, Italy
84. "Toda Lattice Models for DNA" (P.L. Christiansen) Transport Properties of Nonlinear Condensed Matter Systems, April 19-21, 1990, Heraklion, Crete, Greece
85. "A Toda Lattice Model for DNA" (P.L. Christiansen) Nonliner and Chaotic Phenomena in Plasma, Solids, and Fluids, July 16-27, 1990, University of Alberta Edmonton, Canada
86. "Application of the Bäcklund-Takhtajan Transformation to the Sine-Gordon System" (P.L. Christiansen) NATO Applied Research Workshop on Superconducting Electronics and II Workshop on Josephson Devices, September 3-7, 1990, Capri, Italy
87. "Chaos and Quantum Mechanics of the DST Equation" (P.L. Christiansen) International Workshop "Nonlinearity with Disorder", Thermophysics Department of Uzbek Academy of Sciences, October 1-7, 1990, Tashkent, Uzbekistan
88. "Perturbed Pitchfork Bifurcations in BCS Gap Equation" (P. L. Christiansen and M. P. Sørensen) Workshop on EC Activities in High Temperature Superconductivity, November 26-27, 1990, Strasbourg, France
89. "On Localization of Energy in Biomolecules" (P.L. Christiansen) RCP 264 Montpellier Non-linéaire 1990 Interdisciplinary Meeting on Nonlinear Evolutions and Inverse Methods, November 30-December 4, 1990, Montpellier, France
90. "Melting of DNA in a Toda Lattice Model" (P.L. Christiansen) Aspects of Nonlinear Dynamics: Solitons and Chaos, Vrije Universiteit, December 6-8, 1990, Bruxelles, Belgium
91. "Concepts of Low-Dimensional, Incompressible, Rotating Fluid Flow" (E.A. Christensen and P.L. Christiansen) Aspects of Nonlinear Dynamics: Solitons and Chaos, Vrije Universiteit, December 6-8, 1990, Bruxelles, Belgium
92. "Coherent and Emergent Phenomena in Biomolecules" (P.L. Christiansen) NATO Advanced Research Workshop "What is life and where is it going?", The University of Arizona, January 15-19, 1991, Tucson, U.S.A.
93. "Application of DST on Scheibe Aggregates" (P.L. Christiansen) NATO Advanced Research Workshop "Proton Transfer in Hydrogen-Bonded Systems", May 21-25, 1991, Heraklion, Crete, Greece (invited talk)
94. "Blow-up in a Nonlinear Model of Langmuir-Blodgett Scheibe Aggregates" (P.L. Christiansen) 6th International Conference on Waves and Stability in Continuous Media, May 27-June 1, 1991, Acireale, Sicily, Italy (invited talk)
95. Chaos and Quantum Theory for the Discrete Self-Trapping Equation" (P.L. Christiansen) NATO Advanced Research Workshop "Quantum Chaos - Theory and Experiment", The Niels Bohr Institute, May 25-June 1, 1991, Copenhagen (invited talk)
96. "A Discrete Nonlinear Model of Scheibe Aggregates" (P.L. Christiansen) 7th Interdisciplinary Workshop on Nonlinear Coherent Structures in Physics and Biology, June 4-6, 1991, Dijon, France
97. Blow-up in the Continuum Limit of a 2-D Toda Lattice" (P.L. Christiansen) NATO Advanced Research Workshop "Singular Limits of Dispersive Waves", July 8-12, 1991, Lyon, France (invited talk)
98. Classical and Quantum Mechanical Order and Chaos in the Discrete Self-Trapping Equation" (P.L. Christiansen) NATO Advanced Study Institute Chaotic Dynamics: Theory and Practice", July 11-20, 1991, Patras, Greece (invited talk)
99. "Intermittency Between Soliton Dynamic States" (P.L. Christiansen) USSR/DK Seminar on Superconducting Electronics, December 16-17, 1991, Moscow, Russia (invited talk)
100. "Solitary Wave Solutions to a System of Boussinesq-like Equations" (P.L. Christiansen) 4th International Conference on Hyperbolic Problems, April 3-8, 1992, Taormina, Italy
101. "DNA Models" (P.L. Christiansen) Future Directions in Physical and Biological Systems, July 23-August 1, 1992, DTU, Lyngby (invited)
102. "Nonlinear Models of High T_c Superconductivity" (P.L. Christiansen) High Temperature Superconductivity Projects Supported in the Community R & D Programmes, November 2-3, 1992, Strasbourg, France (invited)
103. "On the Switching Between Soliton Dynamic States in Long Josephson Junctions" (P.L. Christiansen) Workshop on Josephson Junctions, April 29-May 2, 1993 Heraklion, Greece (invited talk)
104. "On Compact and Non-compact Integrable Systems" (P.L. Christiansen) NATO Advanced Research Workshop "Nonlinear Coherent Structures in Physics and Biology, June 1-4, 1993, University of Bayreuth, Germany (invited talk)
105. "An Application of the Hénon-Heiles System to Davydov Solitons" (P.L. Christiansen) NATO Advanced Study Institute "Real and Complex Dynamical Systems", June 20-July 2, 1993, Hillerød, Denmark (poster)
106. "Solitary Wave Solutions to a System of Boussinesq Equations" (P.L. Christiansen) IUTAM Symposium on Nonlinear Waves in Solids, August 15-20, 1993, University of Victoria, BC, Canada (invited talk)
107. Subcritical Localization in the Discrete Nonlinear Schrødinger Equation with Arbitrary Power Nonlinearity" (P.L. Christiansen, O. Bang and J. Juul Rasmussen) NATO Advanced Study Institute "Chaos, Order and Patterns. Aspects of Nonlinearity, The Gran Finale", September 5-10, 1993, Como, Italy (poster)
108. "Competition between blow-up and discreteness" (P.L. Christiansen) 1st Nordic Nonlinear Days, January 12-14, 1994, Hensinki, Finland (invited talk)
109. "The DST-equation and self-trapping of energy" (P.L. Christiansen) EU Euroconference programme "Applied Nonlinear Dynamics", June 30-July 4, 1994, Centre de Physique des Houches, France (invited talk)
110. "Collapse and fluctuations in the nonlinear Schrödinger equation" (P.L. Christiansen) International Workshop "Nonlinear Schrödinger Equation 1994, July 25-August 3, 1994, Landau Institute, Chernogolovka, Russia (invited talk)
111. "Blow-up and thermal fluctuations in the nonlinear Schrödinger equation" (P.L. Christiansen) Fluctuation Phenomena: Disorder and Nonlinearity, September 26-29, 1994, San Lorenzo de El Escorial, Madrid, Spain (invited talk)
112. "The influence of noise on critical collapse in the nonlinear Schrödinger equation" (K. Ø. Rasmussen, Y. B. Gaididei, O. Bang, and P. L. Christiansen) 3rd IMACS International Conference on Computational Physics, Nonlinear Dynamical Phenomena in Physical, Chemical and Biological Systems, August 1-4, 1994, Lyngby, Denmark (poster)
113. "Blow-up and thermal fluctuations in the nonlinear Schrødinger equation" (P.L. Christiansen) Nonlinear Coherent Structures in Physics and Biology, July 10-14, 1995, Heriot-Watt University, Edinburgh, Scotland (invited talk)
114. "Applications of the NLS equation" (P.L. Christiansen) Euroconference Nonlinear Klein-Gordon and Schrödinger Systems: Theory and Applications, September 25-30, 1995, San Lorenzo de El Escorial, Madrid, Spain (invited talk)
115. "Blow-up and temperature effects in the nonlinear Schrödinger equation (P.L. Christiansen) Eurolights II - Light on Organized Molecular Systems, December 4-8, 1995, Hengelhoef, Belgium
116. "Nonlocal Dispersive Interactions in Discrete Nonlinear Schrödinger Model" (K.Ø. Rasmussen, P.L. Christiansen, Yu.B. Gaididei, and S.F. Mingaleev) Nordic Statistical Physics Workshop, May 9-11, 1996, NORDITA, Copenhagen, Denmark (poster)
117. "White Noise and Nonlinear Damping in the Two-Dimensional Model of Energy Transfer in Molecular Systems" (I.I. Yakimenko, P.L. Christiansen, M. Johansson, K.Ø. Rasmussen, and Yu. B. Gaididei) 9th Conference of the European Consortium for Mathematics in Industry, June 25-29, 1996, DTU, Lyngby, Denmark
118. "Collapse and thermal noise in nonlinear systems" (P.L. Christiansen) EUROMECH 348 Nonlinear Dynamics of Heterogeneous and Microstructured Solids, May 22-26, 1996, Tallinn, Estonia
119. "A nonlinear model of temperature dependent dynamics of organic films" (P.L. Christiansen) Nordic Nonlinear Days: Complexity, Coherence and Non-Equilibrium Systems, August 24-27, 1996, Krogerup Højskole, Humlebæk, Denmark (invited speaker)
120. "Collapse and thermal fluctuations in continuous and discrete systems" (P.L. Christiansen) International Conference on Fluctuations, Nonlinearity and Disorder, September 30-October 4, 1996, Heraklion, Crete, Greece (invited talk)
121. " Nonlocal Dispersive Interactions in Discrete Nonlinear Schrödinger Equation" (Yu.B. Gaididei, S.F. Mingaleev, P.L. Christiansen, and K.Ø. Rasmussen) International Conference on Fluctuations, Nonlinearity and Disorder, September 30-October 4, 1996, Heraklion, Crete, Greece (poster)
122. "Coherent Excitations in One- and Two-Dimensional Molecular Structures" (P.L. Christiansen) Ariatico Research Conference: "Nonlinear Cooperative Phenomena in Biological Systems", August 19-22, 1997, International Centre for Theoretical Physics, Trieste, Italy (invited talk)
123. "Collaboration with Bob Parmentier" (P.L. Christiansen) Workshop "Nonlinear Dynamics and the Josephson Effect", September 5, 1997, Salerno, Italy (invited talk)
124. "Energy transduction in biomolecules: A model for energy storage and transport" (P.L. Christiansen, M. Johansson, Kim Rasmussen, and Yu. B. Gaididei) and "Effects of long-range dispersion in nonlinear dynamics of DNA Molecules" (Yu. B. Gaididei, S. F. Mingaleev, P. L. Christiansen, M. Johansson, and K. O. Rasmussen) Nonlinear Phenomena in Biology, June 23-28, 1998, Puschino, Russia (invited talk)
125. "A model for energy storage and transport in biomolecules" (P.L. Christiansen) CECAM Workshop on "Localized Excitations in Condensed Matter and Molecular Physics", July 7-10, 1998, ENS, Lyon, France (invited talk)
126. "Internal Instability in Fluxon Dynamics of Stacked Josephson Junctions" (P. L. Christiansen) Nonlinear Dynamics in Josephson Junctions, 25-28 October 1998, Marina di Camerota, Italy (invited talk) Italy
127. "Nonlocal Effects in Stacked Josephson Junctions" (Yu. B. Gaididei, S. F. Mingaleev, and P. L. Christiansen) and "Internal Instability in Fluxon Dynmaics of Stacked Josephson Junctions" (A. Bisgaard, P. L. Christiansen, M. P. Soerensen, Yu. B. Gaididei, N. F. Pedersen, C. Gorria, and V. Muto) 5th SCENET Workshop on "Fundamental Aspects of Superconductivity for Applications", October 29-31, 1998, Ravello, Italy (2 posters)

Conference Participations without Presentations

1. Princeton University Conference Meeting, Singular Perturbation Technique, Princeton University, January 22-24, 1970
2. Conference on Nonlinear Waves and Solitons, University of Newcastle-upon-Tyne, September 6-9, 1976
3. Applied Mathematics, Systems Analysis, and Computer Science, Oslo and Geilo, Norway, September 17-21, 1984 (Head of Danish delegation)
4. New Developments in the Theory and Application of Solitons, The Royal Society, London, November 1-2, 1984 (invited participant)
5. Solitons, Instabilities and Chaotic Processes in Fluid Dynamics, Cetraro, Italy, June 29-July 3, 1987 (member of scientific committee and invited participant)
6. Non-linear Excitations in Condensed Matter: Envelope Solitons, Lake Arrowhead, California, U.S.A., November 20-22, 1987
7. IBM International Scientific Symposium on Computational Physics, Bad Neuenahr, Germany, November 24-26, 1987 (invited participant)
8. Arizona/Los Alamos Days, Department of Mathematics, University of Arizona, Tucson, U.S.A., February 3-4, 1989
9. Science Day: Life Sciences, EEC, Max Planck Institute for Biochemistry, München, Germany, June 19-20, 1989
10. Round Table on the Science of Complexity in European Research, International Institute of Physics and Chemistry, Brussels, Belgium, February 17-18, 1994
11. International Conference on Nonlinear Superconducting Devices and High-T_c Materials, Hotel La Palma, Capri, Italy, October 8-13, 1994
12. Organization Lines within Complexity, Workshop Supported by the European Commission, DG XII, National Institute of Optics, University of Firenze, Firenze, Italy, December 10-13, 1994