Statistical quasi-particles as the normal component of a superfluid

Richard E. Norton

Physica A: Statistical Mechanics and its Applications, 1989, vol. 158, issue 1, 22-32

Abstract: It is argued from the structure of many body theory Feynman graphs that the statistical average of a spontaneously broken conserved charge density decomposes naturally into two parts: (1) a “normal” part given by an ideal gas-like expression with statistical quasi-particle emergies, and (2) a “superfluid” part which vanishes when the symmetry is restored. The momentum density of a relativistic superfluid is also discussed.

Date: 1989
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:158:y:1989:i:1:p:22-32

DOI: 10.1016/0378-4371(89)90503-7

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