On the critical end point of QCD

Gavai, R. V. ; Gupta, Sourendu (2005) On the critical end point of QCD Physical Review D, 71 (11). 114014_1-114014_21. ISSN 0556-2821

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Official URL: http://prd.aps.org/abstract/PRD/v71/i11/e114014

Related URL: http://dx.doi.org/10.1103/PhysRevD.71.114014


We investigate the critical end point of QCD with two flavours of light dynamical quarks at finite lattice cutoff a=¼T using a Taylor expansion of the baryon number susceptibility. We find a strong volume dependence of its radius of convergence. In the large volume limit we obtain μB/T≈1.1 as the radius of convergence at T/Tc≈0.95 where Tc is the crossover temperature at zero chemical potential. Since this estimate is a lower bound on the critical end point of QCD, the above small value of μ may place it in the range of observability in energy scans at the Relativistic Heavy-Ion Collider (RHIC).

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