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arXiv 0906.0925quant-ph
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相空间中的量子力学:维格纳函数与费米函数的一阶比较

Quantum mechanics in phase space: First order comparison between the Wigner and the Fermi function

G. Benenti, G. Strini

摘要:

Fermi g_F(x,p)函数提供了一种概念上不同于基于Wigner函数W(x,p)的量子力学的相空间描述。本文证明了对于峰值波包,g_F(x,p)=0曲线近似对应于Wigner函数的相空间轮廓水平,并对波包的大小和形状提供了满意的描述。我们的结果表明,费米函数是一个有趣的工具,研究量子涨落的半经典制度。

英文摘要:

The Fermi g_F(x,p) function provides a phase space description of quantum mechanics conceptually different from that based on the the Wigner function W(x,p). In this paper, we show that for a peaked wave packet the g_F(x,p)=0 curve approximately corresponds to a phase space contour level of the Wigner function and provides a satisfactory description of the wave packet's size and shape. Our results show that the Fermi function is an interesting tool to investigate quantum fluctuations in the semiclassical regime.

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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