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Photonic processes in Born-Infeld theory

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arxiv 1310.8410 v2 pith:BDPLDZVC submitted 2013-10-31 hep-ph hep-th

Jose Manuel Davila , Christian Schubert , Maria Anabel Trejo This is my paper
classification hep-phhep-th
keywords born-infeldtheoryprocessesapproximationfieldlagrangianphotonphoton-photon
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We study the processes of photon-photon scattering and photon splitting in a magnetic field in Born-Infeld theory. In both cases we combine the terms from the tree-level Born-Infeld Lagrangian with the usual one-loop QED contributions, where those are approximated by the Euler-Heisenberg Lagrangian, including also the interference terms. For photon-photon scattering we obtain the total cross section in the low-energy approximation. For photon splitting we compute the total absorption coefficient in the hexagon (weak field) approximation, and also show that, due to the non-birefringence property of Born-Infeld theory, the selection rules found by Adler for the QED case continue to hold in this more general setting. We discuss the bounds on the free parameter of Born-Infeld theory that may be obtained from this type of processes.

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