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Nonlocal effects in high energy charged particle beams
Pontus Johannisson, Dan Anderson, Mietek Lisak +3
Within the framework of the thermal wave model, an investigation is made of the longitudinal dynamics of high energy charged particle beams. The model includes the self-consistent…
Nonlinear Propagation of Incoherent Photons in a Radiation Background
Padma K. Shukla, Mattias Marklund, Gert Brodin +1
The nonlinear propagation of intense incoherent photons in a photon gas is considered. The photon-photon interactions are governed by a pair of equations comprising a wave-kinetic…
Modulational and filamentational instabilities of two electromagnetic pulses in a radiation background
M. Marklund, P. K. Shukla, G. Brodin +1
The nonlinear interaction, due to quantum electrodynamical (QED) effects, between two electromagnetic pulses and a radiation gas is investigated. It is found that the governing equ…
Cosmic magnetic fields from velocity perturbations in the early Universe
Gerold Betschart, Peter K. S. Dunsby, Mattias Marklund
We show, using a covariant and gauge-invariant charged multifluid perturbation scheme, that velocity perturbations of the matter-dominated dust Friedmann-Lemaitre-Robertson-Walker…
Nonlinear resonant wave interaction in vacuum
Gert Brodin, Daniel Eriksson, Mattias Marklund
The basic equations governing propagation of electromagnetic and gravitational waves in vacuum are nonlinear. As a consequence photon-photon interaction as well as photon-graviton…
Dynamics of radiation due to vacuum nonlinearities
Mattias Marklund, Gert Brodin, Lennart Stenflo +1
In quantum electrodynamics, photon-photon scattering can be the result of the exchange of virtual electron-positron pairs. This gives rise to a non-trivial dispersion relation for…