Kibble-Zurek scaling in holographic quantum quench: backreaction

Sumit R. Das, Takeshi Morita

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Abstract: We study gauge and gravity backreaction in a holographic model of quantum quench across a superfluid critical transition. The model involves a complex scalar field coupled to a gauge and gravity field in the bulk. In earlier work (arXiv:1211.7076) the scalar field had a strong self-coupling, in which case the backreaction on both the metric and the gauge field can be ignored. In this approximation, it was shown that when a time dependent source for the order parameter drives the system across the critical point at a rate slow compared to the initial gap, the dynamics in the critical region is dominated by a zero mode of the bulk scalar, leading to a Kibble-Zurek type scaling function. We show that this mechanism for emergence of scaling behavior continues to hold without any self-coupling in the presence of backreaction of gauge field and gravity. Even though there are no zero modes for the metric and the gauge field, the scalar dynamics induces adiabaticity breakdown leading to scaling. This yields scaling behavior for the time dependence of the charge density and energy momentum tensor.

Original languageEnglish
Article number84
JournalJournal of High Energy Physics
Volume2015
Issue number1
DOIs
StatePublished - Jan 16 2015

Bibliographical note

Publisher Copyright:
© 2015, The Author(s).

Keywords

  • AdS-CFT Correspondence
  • Holography and condensed matter physics (AdS/CMT)

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Fingerprint

Dive into the research topics of 'Kibble-Zurek scaling in holographic quantum quench: backreaction'. Together they form a unique fingerprint.

Cite this