Dark Energy Content of Nonlinear Electromagnetism

Details Dark Energy Content of Nonlinear Electromagnetism Dark Energy Content of Nonlinear Electromagnetism

2008-11-27

arxiv.org/abs/0811.4467v4

Phys.Rev.D81:065026,2010

Physics

High Energy Physics

High Energy Physics - Theory

16 pages, 12 figures; reorganized introduction and sections 4 and 5, added further numerical results and discussion, updated r

Scientific paper

10.1103/PhysRevD.81.065026

Quasi-constant external fields in nonlinear electromagnetism generate a contribution to the energy-momentum tensor with the form of dark energy. To provide a thorough understanding of the origin and strength of the effects, we undertake a complete theoretical and numerical study of the energy-momentum tensor $T^{\mu\nu}$ for nonlinear electromagnetism. The Euler-Heisenberg nonlinearity due to quantum fluctuations of spinor and scalar matter fields is considered and contrasted with the properties of classical nonlinear Born-Infeld electromagnetism. We also address modifications of charged particle kinematics by strong background fields.

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