Effective actions at finite temperature

Journal Article · Tue Jul 13 00:00:00 EDT 1999 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.59662· OSTI ID:21210417

Fosco, C D ^[1]

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1. Centro Atomico Bariloche, 8400 Bariloche (Argentina)

There exist interesting background gauge field configurations such that {gamma}{sub odd}, the parity odd part of the effective action for massive Dirac fermions in 2d+1 dimensions at finite temperature may be obtained exactly. The method of computation resorts to the chiral anomaly of a dimensionally reduced theory. We present an explicit derivation for the Abelian case in 2+1 dimensions, providing an alternative 'perturbative' derivation. Then we discuss the general 2d+1 dimensional case. We finally apply our results to two examples: the 'mixed' CS term in the Dorey-Mavromatos model of planar superconductivity, and a fixed-charge ensemble in the presence of a magnetic field.

• OSTI ID: 21210417
• Journal Information: AIP Conference Proceedings, Vol. 484, Issue 1; Conference: 2. meeting on trends in theoretical physics, Buenos Aires (Argentina), 29 Nov - 4 Dec 1998; Other Information: DOI: 10.1063/1.59662; (c) 1999 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACTION INTEGRAL
CALCULATION METHODS
CHIRALITY
FERMIONS
GAUGE INVARIANCE
MAGNETIC FIELDS
PARITY
PERTURBATION THEORY
QUANTUM FIELD THEORY
SUPERCONDUCTIVITY