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Scientific article
English

Renormalization of composite operators in time-dependent backgrounds

Published inNuclear physics. B, vol. 874, no. 3, p. 792-807
Publication date2013
Abstract

We study the phenomenon of composite operator renormalization and mixing in systems where time-translational invariance is broken and the evolution is out-of-equilibrium. We show that composite operators mix also through non-local memory terms which persist for periods whose duration is set by the mass scales in the problem.

Citation (ISO format)
DRESTI, Simone, RIOTTO, Antonio Walter. Renormalization of composite operators in time-dependent backgrounds. In: Nuclear physics. B, 2013, vol. 874, n° 3, p. 792–807. doi: 10.1016/j.nuclphysb.2013.06.019
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ISSN of the journal0550-3213
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