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

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

2009-06-04

arxiv.org/abs/0906.0925v2

Eur. Phys. J. D 57, 117 (2010)

Physics

Quantum Physics

5 pages, 3 figures, added new data and discussion

Scientific paper

10.1140/epjd/e2010-00006-y

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.

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