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arXiv · hep-th/9307191

Cancellation of unphysical gauge and ghost degrees of freedom in backreaction

Masaru Onoda
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Abstract

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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Masaru Onoda. 1993-07-30. Cancellation of unphysical gauge and ghost degrees of freedom in backreaction. https://doi.org/10.1103/physrevd.48.3860

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