Comment on and erratum to ``Pressure of hot QCD at largeNf'' | Zendy

Andreas Ipp | Zendy; Guy D. Moore | Zendy; Anton Rebhan | Zendy

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Comment on and erratum to ``Pressure of hot QCD at largeN_f''

Author(s) -

Andreas Ipp,

Guy D. Moore,

Anton Rebhan

Publication year - 2003

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2003/01/037

Subject(s) - quantum chromodynamics , physics , fermion , ambiguity , perturbation theory (quantum mechanics) , limit (mathematics) , coupling (piping) , perturbation (astronomy) , coupling strength , mathematical physics , thermal quantum field theory , thermal , quantum electrodynamics , statistical physics , quantum mechanics , thermodynamics , mathematics , condensed matter physics , materials science , philosophy , mathematical analysis , linguistics , quantum gravity , quantum , metallurgy

We repeat and correct the recent calculation of the thermodynamic potentialof hot QCD in the limit of large number N_f of fermions. The new result for thethermal pressure turns out to agree significantly better with results obtainedfrom perturbation theory at small coupling. For large coupling, a nonmonotonicbehaviour is reproduced, but the pressure of the strongly coupled theory doesnot exceed the free pressure as long as the Landau pole ambiguity remainsnegligible numerically.Comment: 9 pages, 3 figures, JHEP3; v2: version accepted for publication in JHEP (title changed, 1 footnote added, 1 reference updated, content otherwise unchanged

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