Chiral dynamics in QCD at finite chemical potential

Gupta, Sourendu ; Ray, R. (2004) Chiral dynamics in QCD at finite chemical potential Physical Review D - Particles, Fields, Gravitation and Cosmology, 70 (11). 114015_1-114015_11. ISSN 1550-7998

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We present the renormalized Taylor expansion of the chiral condensate with chemical potential. The relation with the Taylor coefficients of meson susceptibilities and the quark mass dependence of the quark number susceptibilities are obtained through chiral Ward identities and Maxwell relations. The continuum limit is obtained in quenched and two flavor QCD. In Nf=2 QCD, the quadratic response coefficients of the chiral condensate to chemical potential indicate that pion fluctuations decrease at finite chemical potential toward the critical end point. We discuss how these observables can be used to test other features of the QCD phase diagram.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:66107
Deposited On:21 Oct 2011 03:23
Last Modified:21 Oct 2011 03:23

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