Driven holographic CFTs

Rangamani, Mukund; Rozali, Moshe; Wong, Anson

doi:10.1007/jhep04(2015)093

Driven holographic CFTs

Rangamani, Mukund; Rozali, Moshe; Wong, Anson

Authors

Mukund Rangamani

Moshe Rozali

Anson Wong

Abstract

We study the dynamical evolution of strongly coupled field theories, initially in thermal equilibrium, under the influence of an external driving force. We model the field theory holographically using classical gravitational dynamics in an asymptotically AdS spacetime. The system is driven by a source for a (composite) scalar operator. We focus on a scenario where the external source is periodic in time and chart out the response of several observables. We find an interesting phase structure in the response as a function of the amplitude of the source and driving frequency. Specifically the system transitions from a dissipation dominated phase, via a dynamical crossover to a highly resonant amplification phase. The diagnostics of these phases include the response of the operator in question, entropy production, energy fluctuations, and the temporal change of entanglement entropy for small subsystems. We comment on evidence for a potential phase transition in the energy fluctuations of the system.

Citation

Rangamani, M., Rozali, M., & Wong, A. (2015). Driven holographic CFTs. Journal of High Energy Physics, 2015(4), https://doi.org/10.1007/jhep04%282015%29093

Journal Article Type	Article
Acceptance Date	Mar 17, 2015
Publication Date	Apr 20, 2015
Deposit Date	Apr 6, 2015
Publicly Available Date	Apr 15, 2015
Journal	Journal of High Energy Physics
Print ISSN	1126-6708
Publisher	Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Peer Reviewed	Peer Reviewed
Volume	2015
Issue	4
DOI	https://doi.org/10.1007/jhep04%282015%29093
Keywords	Black Holes in String Theory, AdS-CFT Correspondence, Holography and condensed matter physics (AdS/CMT), Quantum Dissipative Systems.
Related Public URLs	http://arxiv.org/abs/1502.05726

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