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arXiv 1807.03572quant-phcond-mat.stat-mech
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量子谐振子的热分布

Heat distribution of a quantum harmonic oscillator

Tobias Denzler, Eric Lutz

摘要:

我们考虑一个弱耦合到不同温度热浴的热量子谐振子。我们利用量子光学主方程解析地研究了两个系统之间的量子热交换统计。我们精确地计算了热分布的特征函数,并证明它验证了Jarzynski-Wójcik涨落定理。我们进一步评估的热概率密度在长的热化时间的限制,无论是在低温和高温制度,并通过计算其前两个累积量调查其时间演化。

英文摘要:

We consider a thermal quantum harmonic oscillator weakly coupled to a heat bath at a different temperature. We analytically study the quantum heat exchange statistics between the two systems using the quantum-optical master equation. We exactly compute the characteristic function of the heat distribution and show that it verifies the Jarzynski-Wójcik fluctuation theorem. We further evaluate the heat probability density in the limit of long thermalization times, both in the low and high temperature regimes, and investigate its time evolution by calculating its first two cumulants.

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。

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