Quantum dynamics with stochastic gauge simulations
Quantum dynamics with stochastic gauge simulations
复制标题
具有随机规范模拟的量子动力学
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
P. Deuar
中科院分区：
文献类型：
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作者：
P. Drummond;P. Deuar
介绍了随机规范表示的一般思想，并将其与更传统的相空间展开（例如维格纳展开）进行了比较。随机规范可用于获得无限类正定随机时间演化方程，相当于包括量子时间演化在内的许多系统的主方程。该方法通过各种简单的例子进行了说明，从天体物理分子氢的产生，到光陷阱中玻色-爱因斯坦凝聚的热门问题以及由此产生的量子动力学。
The general idea of a stochastic gauge representation is introduced and compared with more traditional phase-space expansions, like the Wigner expansion. Stochastic gauges can be used to obtain an infinite class of positive-definite stochastic time-evolution equations, equivalent to master equations, for many systems including quantum time evolution. The method is illustrated with a variety of simple examples ranging from astrophysical molecular hydrogen production, through to the topical problem of Bose–Einstein condensation in an optical trap and the resulting quantum dynamics.