Cancellation of unphysical gauge and ghost degrees of freedom in backreaction

Details Cancellation of unphysical gauge and ghost degrees of freedom in backreaction Cancellation of unphysical gauge and ghost degrees of freedom in backreaction

1993-07-30

arxiv.org/abs/hep-th/9307191v1

Phys.Rev.D48:3860-3868,1993

Physics

High Energy Physics

High Energy Physics - Theory

20 pages , LaTeX , UT-Komaba/93-9

Scientific paper

10.1103/PhysRevD.48.3860

We study the U(1) Higgs model in spacetime-dependent background fields (a background metric and a background scalar field). Particle creation can occur because of the time-dependence of these background fields. In gauge theories, there is a unphysical sector and consequently unphysical particles may be produced. However, it is shown that produced unphysical particles have no contribution to backreaction to background fields.

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