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Renormalization of composite operators in time-dependent backgrounds

Published in Nuclear Physics. B. 2013, vol. 874, no. 3, p. 792-807
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.
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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. https://archive-ouverte.unige.ch/unige:36475

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Deposited on : 2014-05-12

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