Dark energy simulacrum in nonlinear electrodynamics

Lance Labun, Johann Rafelski

Research output: Contribution to journalArticle

25 Scopus citations

Abstract

Quasiconstant external fields in nonlinear electromagnetism generate a global contribution proportional to gμν in the energy-momentum tensor, thus a simulacrum of dark energy. To provide a thorough understanding of the origin and strength of its effects, we undertake a complete theoretical and numerical study of the energy-momentum tensor Tμν 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 address modifications of charged particle kinematics by strong background fields.

Original languageEnglish (US)
Article number065026
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume81
Issue number6
DOIs
StatePublished - Mar 25 2010

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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