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29 March 2024
 
  » arxiv » 0712.3379

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Expectation values and vacuum currents of quantum fields
G. A. Vilkovisky ;
Date 20 Dec 2007
AbstractTheory of expectation values is presented as an alternative to S-matrix theory for quantum fields. This change of emphasis is conditioned by a transition from the accelerator physics to astrophysics and cosmology. The issues discussed are the time-loop formalism, the Schwinger - Keldysh diagrams, the effective action, the vacuum currents, and the effect of particle creation.
Source arXiv, 0712.3379
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