Irreversibility in quantum field theory

Details Irreversibility in quantum field theory Irreversibility in quantum field theory

1995-01-04

arxiv.org/abs/quant-ph/9501004v1

Physics

Quantum Physics

7 pages, LATEX, Contribution to the Clausthal-Symposium (August 1994)

Scientific paper

It is shown how the programme of decoherence can be applied in the context of
quantum field theory. To illustrate the role of gauge invariance, we first
discuss the charge superselection rule in quantum electrodynamics in some
detail. We then present an example where macroscopic electromagnetic fields are
``measured" through interaction with charges and thereby rendered classical.

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