Spread of Entanglement in Non-Relativistic Theories

Autor:	Sagar F. Lokhande
Jazyk:	angličtina
Rok vydání:	2018
Předmět:	Physics QC1-999
Zdroj:	Advances in High Energy Physics, Vol 2018 (2018)
Druh dokumentu:	article
ISSN:	1687-7357 1687-7365
DOI:	10.1155/2018/9151707
Popis:	We use a simple holographic toy model to study global quantum quenches in strongly coupled, hyperscaling-violating-Lifshitz quantum field theories using entanglement entropy as a probe. Generalizing our conformal field theory results, we show that the holographic entanglement entropy of small subsystems can be written as a simple linear response relation. We use this relation to derive a time-dependent first law of entanglement entropy. In general, this law has a time-dependent term resembling relative entropy which we propose as a good order parameter to characterize out-of-equilibrium states in the post-quench evolution. We use these tools to study a broad class of quantum quenches in detail: instantaneous, power law, and periodic.
Databáze:	Directory of Open Access Journals
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