Vacuum Polarization Effects from Fermion Zero-Point Energy

Details Vacuum Polarization Effects from Fermion Zero-Point Energy Vacuum Polarization Effects from Fermion Zero-Point Energy

2002-01-25

arxiv.org/abs/hep-th/0201204v2

Physics

High Energy Physics

High Energy Physics - Theory

LaTex file, 16 pages, no figures, new section and references added

Scientific paper

The influence of an external electromagnetic field on the vacuum structure of a quantized Dirac field is investigated by considering the quantum corrections to classical Maxwell's lagrangian density induced by fluctuations of the non-perturbative vacuum. Effective Lagrangian densities for Maxwell's theory in (3+1) and (2+1) dimensions are derived from the vacuum zero-point energy of the fermion field in the context of a consistent Pauli-Villars-Rayski subtraction scheme, recovering Euler-Kockel-Heisenberg and Maxwell-Chern-Simons effective theories. Effective scalar quantum electrodymanics as well as low temperature effects in both spinor and scalar theories are also discussed.

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