Non-equilibrium quantum spin dynamics from classical stochastic processes
Non-equilibrium quantum spin dynamics from classical stochastic processes
复制标题
经典随机过程的非平衡量子自旋动力学
DOI:
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
M. Bhaseen
中科院分区:
文献类型:
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作者:
S. Nicola;B. Doyon;M. Bhaseen
Following on from our recent work, we investigate a stochastic approach to non-equilibrium quantum spin systems. We show how the method can be applied to a variety of physical observables and for different initial conditions. We provide exact formulae of broad applicability for the time-dependence of expectation values and correlation functions following a quantum quench in terms of averages over classical stochastic processes. We further explore the behavior of the classical stochastic variables in the presence of dynamical quantum phase transitions, including results for their distributions and correlation functions. We provide details on the numerical solution of the associated stochastic differential equations, and examine the growth of fluctuations in the classical description. We discuss the strengths and limitations of the current implementation of the stochastic approach and the potential for further development.
影响因子:
56.9
作者:
Langen, Tim;Erne, Sebastian;Schmiedmayer, Joerg
通讯作者:
Schmiedmayer, Joerg
影响因子:
8.6
作者:
Caux, Jean-Sebastien;Essler, Fabian H. L.
通讯作者:
Essler, Fabian H. L.