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High Energy Physics - Lattice

arXiv:hep-lat/0506015 (hep-lat)
[Submitted on 13 Jun 2005 (v1), last revised 14 Apr 2008 (this version, v3)]

Title:Lattice QCD equation of state : improving the differential method

Authors:Rajiv V. Gavai, Sourendu Gupta, Swagato Mukherjee
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Abstract: We propose an improvement of the differential method for the computation of the equation of state of QCD from lattice simulations. In contrast to the earlier differential method our technique yields positive pressure for all temperatures including in the transition region. Employing it on temporal lattices of 8, 10 and 12 sites and by extrapolating to zero lattice spacing we obtained the pressure, energy density, entropy density, specific heat and speed of sound in quenched QCD for 0.9 < T/Tc < 3. A comparison of our results is made with those from the dimensional reduction approach and a conformal symmetric theory at high-temperature.
Comments: Version to be published in Pramana. Title modified. Explanatory material added. Figure 6b redrawn with corrected normalization for the AdS/CFT line
Subjects: High Energy Physics - Lattice (hep-lat); High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Theory (hep-th); Nuclear Theory (nucl-th)
Report number: TIFR/TH/05-23
Cite as: arXiv:hep-lat/0506015
  (or arXiv:hep-lat/0506015v3 for this version)
  https://doi.org/10.48550/arXiv.hep-lat/0506015
Journal reference: Pramana 71:487-508,2008
Related DOI: https://doi.org/10.1007/s12043-008-0126-9

Submission history

From: Swagato Mukherjee [view email]
[v1] Mon, 13 Jun 2005 06:24:13 UTC (36 KB)
[v2] Wed, 22 Jun 2005 13:24:11 UTC (36 KB)
[v3] Mon, 14 Apr 2008 09:57:26 UTC (54 KB)
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