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

被引：3
|
作者：
Benenti, G. [1 ,2 ,3 ]
Strini, G. [4 ]
机构：
[1] Univ Insubria, CNR INFM, CNISM, I-22100 Como, Italy
[2] Univ Insubria, Ctr Nonlinear & Complex Syst, I-22100 Como, Italy
[3] Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy
[4] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy
来源：
EUROPEAN PHYSICAL JOURNAL D | 2010年 / 57卷 / 01期
关键词：
STOCHASTICITY;
D O I：
10.1140/epjd/e2010-00006-y
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
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.
引用
收藏
页码：117 / 121
页数：5
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