DISSIPATIVE DYNAMICS OF A 2-STATE SYSTEM, THE KONDO PROBLEM, AND THE INVERSE-SQUARE ISING-MODEL

被引：70

作者：

CHAKRAVARTY, S

RUDNICK, J

机构：

[1] Department of Physics, University of California at Los Angeles, Los Angeles

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.75.501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The dynamics of a two-state system coupled to an Ohmic continuum, the dissipative two-state system, is solved by exploiting its connection to the Kondo problem and the inverse-square Ising model. Such a system is known to possess a zero temperature quantum critical point. In the quantum disordered phase the asymptotic dynamics is always an incoherent power-law relaxation. At short times, the system can exhibit damped oscillations only over a limited range of parameters.

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页码：501 / 504

页数：4

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