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Lattice determination of the critical point of QCD at finite T and μ

Zoltan Fodor1,2 and Sandor D. Katz3

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Based on universal arguments it is believed that there is a critical point (E) in QCD on the temperature (T) versus chemical potential (μ) plane, which is of extreme importance for heavy-ion experiments. Using finite size scaling and a recently proposed lattice method to study QCD at finite μ we determine the location of E in QCD with nf = 2+1 dynamical staggered quarks with semi-realistic masses on Lt = 4 lattices. Our result is TE = 160±3.5 MeV and μE = 725±35 MeV. For the critical temperature at μ = 0 we obtained Tc = 172±3 MeV.


Keywords

Lattice Gauge Field Theories

Thermal Field Theory

Lattice QCD

PACS

12.38.Gc Lattice QCD calculations

11.15.Ha Lattice gauge theory

11.10.Wx Finite-temperature field theory

14.65.-q Quarks

Subjects

Particle physics and field theory

Dates

Issue 03 (March 2002)

Received 21 January 2002, accepted for publication 7 March 2002

Published 14 March 2002



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