64 citations · 378 across the 21 of their papers we have counts for
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quant-ph2018★ 64 cited
Probing excited-state quantum phase transition in a quantum many body system via out-of-time-ordered correlator
Qian Wang, Francisco Pérez-Bernal
As a measure of information scrambling and quantum chaos, out-of-time-ordered correlator (OTOC) plays more and more important role in many different fields of physics. In this work…
quant-ph2018★ 28 cited
Excited-state quantum phase transition and the quantum speed limit
Qian Wang, Francisco Perez-Bernal
We investigate the influence of an excited-state quantum phase transition (ESQPT) on the quantum speed limit (QSL) time of an open quantum system. The system consists of a central…
quant-ph2018★ 22 cited
Effects of the Dzyaloshinsky-Moriya interaction on nonequilibrium thermodynamics in the chain in a transverse field
Qian Wang, Duo Cao, H. T. Quan
We examine the effects of the Dzyaloshinsky-Moriya (DM) interaction on the nonequilibrium thermodynamics in an anisotropic spin chain, which is driven out of equilibrium by a…