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CENTRAL CHARGES AND EFFECTIVE ACTION AT FINITE TEMPERATURE AND DENSITY

J. GAMBOA

Departamento de Física, Universidad de Santiago de Chile, Casilla 307, Santiago 2, Chile

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J. LÓPEZ-SARRIÓN

Departamento de Física, Universidad de Santiago de Chile, Casilla 307, Santiago 2, Chile

Also at Departamento de Física Teórica, Universidad de Zaragoza, Zaragoza 50009, Spain.

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M. LOEWE

Facultad de Física, Pontificia Universidad Católica de Chile, Casilla 306, Santiago 22, Chile

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, and

F. MÉNDEZ

INFN, Laboratori Nazionali del Gran Sasso, SS, 17bis, 67010 Asergi (L'Aquila), Italy

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https://doi.org/10.1142/S0217732304012952Cited by:1 (Source: Crossref)

Abstract

The current algebra for gauge theories like QCD at finite temperature and density is studied. We start considering, the massless Thirring model at finite temperature and density, finding an explicit expression for the current algebra. The central charge only depends on the coupling constant and there are not new effects due to temperature and density. From this calculation, we argue how to compute the central charge for QCD₄ and we argue why the central charge in four dimensions could be modified by finite temperature and density.

Keywords:

Finite temperature field theory

References

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