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The Continuum limit of quark number susceptibilities

Rajiv V. Gavai
(
- Tata Inst.
)
,
Sourendu Gupta
(
- Tata Inst.
)

Feb, 2002

9 pages

Published in:

Phys.Rev.D 65 (2002) 094515

e-Print:

hep-lat/0202006 [hep-lat]

DOI:

10.1103/PhysRevD.65.094515

Report number:

TIFR-TH-02-05

View in:

ADS Abstract Service

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Abstract:

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.

11.15.Ha
12.38.Mh
fermion: lattice field theory
gauge field theory: SU(3)
approximation: quenching
fermion number: susceptibility
continuum limit
mass: screening
finite temperature
scattering: heavy ion

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Figures(0)

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