The intense radiation gas

M. Marklund, P. K. Shukla, B. Eliasson

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


We present a new dispersion relation for photons that are nonlinearly interacting with a radiation gas of arbitrary intensity due to photon-photon scattering. It is found that the photon phase velocity decreases with increasing radiation intensity, and it attains a minimum value in the limit of super-intense fields. By using Hamilton's ray equations, a self-consistent kinetic theory for interacting photons is formulated. The interaction between an electromagnetic pulse and the radiation gas is shown to produce pulse self-compression and nonlinear saturation. Implications of our new results are discussed.
Original languageEnglish
Pages (from-to)327-333
Number of pages7
JournalEPL: A Letters Journal Exploring the Frontiers of Physics
Issue number3
Publication statusPublished - 6 Apr 2005


  • photon-photon scattering


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