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2Physics Quote:
"Can photons in vacuum interact? The answer is not, since the vacuum is a linear medium where electromagnetic excitations and waves simply sum up, crossing themselves with no interaction. There exist a plenty of nonlinear media where the propagation features depend on the concentration of the waves or particles themselves. For example travelling photons in a nonlinear optical medium modify their structures during the propagation, attracting or repelling each other depending on the focusing or defocusing properties of the medium, and giving rise to self-sustained preserving profiles such as space and time solitons or rapidly rising fronts such as shock waves." -- Lorenzo Dominici, Mikhail Petrov, Michal Matuszewski, Dario Ballarini, Milena De Giorgi, David Colas, Emiliano Cancellieri, Blanca Silva Fernández, Alberto Bramati, Giuseppe Gigli, Alexei Kavokin, Fabrice Laussy, Daniele Sanvitto. (Read Full Article: "The Real-Space Collapse of a Two Dimensional Polariton Gas" )

Tuesday, September 05, 2006

Upcoming Physics Conferences

Here is a selected list of forthcoming conferences in Physics. You are welcome to freely advertise Physics jobs or conferences in 2Physics by sending an email to 2Physics@gmail.com.

September 3-12: "International advanced summer school on modern mathematical physics: theoretical cosmology and observational status of modern cosmology" (Dubna, Russia)
September 7-9: "Maxwell 150 Years On" (Aberdeen, UK)
September 10-23: "XII Brazilian School on Cosmology and Gravitation" (Rio de Janeiro, Brazil)
September 17-23: "School in string theory" (Bhubaneswar, India)
September 25-29: "COSMO 2006: International Workshop on Particle Physics and Early Universe" ( Lake Tahoe, CA, USA)
October 6-8: "Mensa colloquium 2006: revolution in cosmology" (Albany, NY, USA)
October 26-28: "10th Paris Cosmology Colloquium" (Paris, France)
November 6-9: "Nanoscience & nanotechnology 2006" (Rome, Italy)
December 17-19: Intl workshop on neutrino masses and mixings - toward unified understanding of quark and lepton mass matrices (Shizuoka, Japan)


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