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Title: Quark-number susceptibility of high-temperature QCD

Journal Article · · Phys. Rev. Lett.; (United States)

We measure the response of the quark number to an infinitesimal chemical potential in high-temperature QCD with two light flavors of dynamical fermions. In the chirally symmetric phase the susceptibilities for quark number density and for the density of the third component of isospin are large and equal within statistics, which is consistent with a plasma of light quarks. In the broken-symmetry phase the susceptibility for quark number density is small, as expected from quark confinement.

Research Organization:
Department of Physics, Indiana University, Bloomington, Indiana 47405
OSTI ID:
5582785
Journal Information:
Phys. Rev. Lett.; (United States), Vol. 59:20
Country of Publication:
United States
Language:
English