Canonical-grandcanonical ensemble in-equivalence in Fermi systems?

Details Canonical-grandcanonical ensemble in-equivalence in Fermi systems? Canonical-grandcanonical ensemble in-equivalence in Fermi systems?

2004-08-02

arxiv.org/abs/cond-mat/0408019v1

J. Phys. A: Math. Gen. 39, 4787-4795 (2006)

Physics

Condensed Matter

Statistical Mechanics

4 pages and 1 figure

Scientific paper

10.1088/0305-4470/39/18/001

I discuss the effects of fermionic condensation in systems of constant
density of states. I show that the condensation leads to a correction of the
chemical potential and of the Fermi distribution in canonical Fermi systems at
low temperatures. This implies that the canonical and grandcanonical ensembles
are not equivalent even for Fermi systems.

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