QUANTUM DISSIPATION IS A DYNAMICAL COLLECTIVE EFFECT

被引：14

作者：

GRUVER, JL ^{[1
]}

ALIAGA, J ^{[1
]}

CERDEIRA, HA ^{[1
]}

PROTO, AN ^{[1
]}

机构：

[1] UNIV BUENOS AIRES,CTR REG NORTE,SISTEMAS DINAMICOS GRP,VICENTE LOPEZ,ARGENTINA

来源：

PHYSICAL REVIEW E | 1995年 / 51卷 / 06期

关键词：

D O I：

10.1103/PhysRevE.51.6263

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

We show that the dissipative dynamics observed in a small quantum system coupled to a large one (the bath) is a consequence of increasing the size of the bath. We exemplify this effect with a quantum harmonic oscillator coupled to N harmonic oscillators. We find that revivals in the level population exist and give an estimate of their period. For large values of N, the level population decays exponentially coming into thermal equilibrium. We conclude that quantum dissipation is a dynamical collective effect. Finally, we discuss extensions beyond the harmonic oscillator. © 1995 The American Physical Society.

引用

页码：6263 / 6266

页数：4

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