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Brazilian Journal of Physics

Print version ISSN 0103-9733

Abstract

VILLAVICENCIO, C.  and  FRAGA, E. S.. Yang-Mills effective action from QCD at finite chemical potential. Braz. J. Phys. [online]. 2007, vol.37, n.1a, pp. 23-25. ISSN 0103-9733.  http://dx.doi.org/10.1590/S0103-97332007000100009.

We present a construction of an effective Yang-Mills action for QCD, from the expansion of the fermionic determinant in terms of powers of the chemical potential at high temperature for the case of massless quarks. We analyze this expansion in the perturbative region and find that it gives extra spurious information. We propose for the non-perturbative sector a simplified effective action which, in principle, contains only the relevant information.

Keywords : Effective Yang-Mills action; Perturbative QCD; Finite chemical potential.

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