Dynamical study of the disordered quantum p=2 spherical model -: art. no. 094403

被引：13

作者：

Rokni, M ^{[1
]}

Chandra, P ^{[1
]}

机构：

[1] Chandra Tech Consulting LLC, Highland Pk, NJ 08904 USA

来源：

PHYSICAL REVIEW B | 2004年 / 69卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.69.094403

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present a dynamical study of the disordered quantum p=2 spherical model at long times. Its phase behavior as a function of spin-bath coupling, strength of quantum fluctuations and temperature is characterized, and we identify different paramagnetic and coarsened regions. A quantum critical point at zero temperature in the limit of vanishing dissipation is also found. Furthermore we show analytically that the fluctuation-dissipation theorem is obeyed in the stationary regime.

引用

页数：13

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