arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv quant-ph/0410183quant-phcond-mat.mes-hall
收藏

开放量子系统中的Berry相:量子朗之万方程方法

Berry phase in open quantum systems: a quantum Langevin equation approach

Gabriele De Chiara, Artur Lozinski, G. Massimo Palma

摘要:

利用量子朗之万方法,研究了具有缓变哈密顿量的二能级系统在缓变磁场中的演化,该系统的模型为自旋为1/2,与量子环境相互作用的模型为谐振子池.这允许容易地获得耗散时间和修正的贝里阶段的情况下的绝热循环演变。

英文摘要:

The evolution of a two level system with a slowly varying Hamiltonian, modeled as s spin 1/2 in a slowly varying magnetic field, and interacting with a quantum environment, modeled as a bath of harmonic oscillators is analyzed using a quantum Langevin approach. This allows to easily obtain the dissipation time and the correction to the Berry phase in the case of an adiabatic cyclic evolution.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑