Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

On the derivation of quasiclassical equations for superconductors

On the derivation of quasiclassical equations for superconductors A method is presented for the derivation of the quasiclassical equations for the Keldysh Green's function of a superconductor or superfluid3He. It is shown that the Green's functions on the classical trajectoriesĝ(y 1,y 2), which depend on two trajectory coordinatesy 1 andy 2, give the full description of the system within quasiclassical accuracy. The equation of motion forĝ(y 1,y 2) is obtained. It is shown thatĝ(y)=ĝ(y+0,y)+ĝ(y−0,y) is equal to the Green's function in momentum space integrated with respect to ξ=v F(p−p F). The normalization condition $$[\hat g(y)]^2 = \hat 1$$ is proved in a direct manner using the properties ofĝ(y 1,y 2) withy 1 ≠y 2. The different methods of introducing the distribution function are discussed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Low Temperature Physics Springer Journals

On the derivation of quasiclassical equations for superconductors

Journal of Low Temperature Physics , Volume 60 (2) – Nov 6, 2004

Loading next page...
 
/lp/springer-journals/on-the-derivation-of-quasiclassical-equations-for-superconductors-lOlOI02QqH

References (7)

Publisher
Springer Journals
Copyright
Copyright
Subject
Physics; Condensed Matter Physics; Characterization and Evaluation of Materials; Magnetism, Magnetic Materials
ISSN
0022-2291
eISSN
1573-7357
DOI
10.1007/BF00681651
Publisher site
See Article on Publisher Site

Abstract

A method is presented for the derivation of the quasiclassical equations for the Keldysh Green's function of a superconductor or superfluid3He. It is shown that the Green's functions on the classical trajectoriesĝ(y 1,y 2), which depend on two trajectory coordinatesy 1 andy 2, give the full description of the system within quasiclassical accuracy. The equation of motion forĝ(y 1,y 2) is obtained. It is shown thatĝ(y)=ĝ(y+0,y)+ĝ(y−0,y) is equal to the Green's function in momentum space integrated with respect to ξ=v F(p−p F). The normalization condition $$[\hat g(y)]^2 = \hat 1$$ is proved in a direct manner using the properties ofĝ(y 1,y 2) withy 1 ≠y 2. The different methods of introducing the distribution function are discussed.

Journal

Journal of Low Temperature PhysicsSpringer Journals

Published: Nov 6, 2004

There are no references for this article.