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Title:

Detecting Equilibrium and Dynamical Quantum Phase Transitions in Ising Chains via Out-of-Time-Ordered Correlators

Document type:
Zeitschriftenaufsatz
Author(s):
Heyl, Markus; Pollmann, Frank; Dóra, Balázs
Abstract:
Out-of-time-ordered (OTO) correlators have developed into a central concept quantifying quantum information transport, information scrambling, and quantum chaos. In this Letter, we show that such an OTO correlator can also be used to dynamically detect equilibrium as well as nonequilibrium phase transitions in Ising chains. We study OTO correlators of an order parameter both in equilibrium and after a quantum quench for different variants of transverse-field Ising models in one dimension, includ...     »
Journal title:
Physical Review Letters 2018-07
Year:
2018
Journal volume:
121
Journal issue:
1
Fulltext / DOI:
doi:10.1103/physrevlett.121.016801
Publisher:
American Physical Society (APS)
E-ISSN:
0031-90071079-7114
Date of publication:
03.07.2018
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