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arXiv · 1305.6401

Renormalization of Composite Operators in time-dependent Backgrounds

Simone Dresti·Antonio Riotto
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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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Simone Dresti, Antonio Riotto. 2013-07-15. Renormalization of Composite Operators in time-dependent Backgrounds. https://doi.org/10.1016/j.nuclphysb.2013.06.019

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