The continuum limit of quark number susceptibilities

Details The continuum limit of quark number susceptibilities The continuum limit of quark number susceptibilities

2002-02-05

arxiv.org/abs/hep-lat/0202006v1

Phys.Rev. D65 (2002) 094515

Physics

High Energy Physics

High Energy Physics - Lattice

8 pages, 5 figures

Scientific paper

10.1103/PhysRevD.65.094515

We report the continuum limit of quark number susceptibilities in quenched QCD. Deviations from ideal gas behaviour at temperature T increase as the lattice spacing is decreased from T/4 to T/6, but a further decrease seems to have very little effect. The measured susceptibilities are 20% lower than the ideal gas values, and also 10% below the hard thermal loop (HTL) results. The off-diagonal susceptibility is several orders of magnitude smaller than the HTL results. We verify a strong correlation between the lowest screening mass and the susceptibility. We also show that the quark number susceptibilities give a reasonable account of the Wroblewski parameter, which measures the strangeness yield in a heavy-ion collision.

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