Nonequilibrium Steady State Generated by a Moving Defect: The Supersonic Threshold.
Nonequilibrium Steady State Generated by a Moving Defect: The Supersonic Threshold.
复制标题
由移动缺陷产生的非平衡稳态:超音速阈值。
DOI:
10.1103/physrevlett.120.060602
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发表时间:
2018
影响因子:
8.6
通讯作者:
Bastianello A
中科院分区:
文献类型:
--
作者:
Bastianello A
We consider the dynamics of a system of free fermions on a 1D lattice in the presence of a defect moving at constant velocity. The defect has the form of a localized time-dependent variation of the chemical potential and induces at long times a nonequilibrium steady state (NESS), which spreads around the defect. We present a general formulation that allows recasting the time-dependent protocol in a scattering problem on a static potential. We obtain a complete characterization of the NESS. In particular, we show a strong dependence on the defect velocity and the existence of a sharp threshold when such velocity exceeds the speed of sound. Beyond this value, the NESS is not produced and, remarkably, the defect travels without significantly perturbing the system. We present an exact solution for a-like defect traveling with an arbitrary velocity and we develop a semiclassical approximation that provides accurate results for smooth defects.
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DOI:
--
发表时间:
2002
期刊:
Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子:
--
作者:
Y. Ogata
通讯作者:
Y. Ogata
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
S. Sotiriadis;J. Cardy
通讯作者:
J. Cardy
DOI:
--
发表时间:
1985
期刊:
影响因子:
--
作者:
F. Narcowich
通讯作者:
F. Narcowich
影响因子:
8.6
作者:
G. Mussardo
通讯作者:
G. Mussardo
影响因子:
8.6
作者:
Bulchandani, Vir B.;Vasseur, Romain;Moore, Joel E.
通讯作者:
Moore, Joel E.