Thermodynamic quark susceptibilties in the PNJL model

M. Cristoforetti; T. Hell; B. Klein; W. Weise

Thermodynamic quark susceptibilties in the PNJL model

M. Cristoforetti
, T. Hell
, B. Klein
, W. Weise

Department of Physics

ECT
Technical University of Munich

Research output: Contribution to journal › Conference article › peer-review

Abstract

Applying Monte-Carlo methods to the Polyakov-loop extended Nambu-Jona-Lasinio (PNJL) model we go beyond the saddle-point approximation in a mean-field calculation and introduce fluctuations around the mean fields. The impact of fluctuations on the thermodynamics of the model in the two-flavor case becomes evident by studying the second-order Taylor expansion coefficients of the thermodynamic grand-canonical partition function with respect to the quark chemical potential. Here we show a comparison with extrapolations from lattice QCD. We find that in order to reproduce lattice data for the flavor non-diagonal quark susceptibilities the introduction of fluctuations is unavoidable.

Original language	English
Journal	Proceedings of Science
Volume	105
State	Published - 2010
Event	28th International Symposium on Lattice Field Theory, Lattice 2010 - Villasimius, Sardinia, Italy Duration: 14 Jun 2010 → 19 Jun 2010

Cite this

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title = "Thermodynamic quark susceptibilties in the PNJL model",

abstract = "Applying Monte-Carlo methods to the Polyakov-loop extended Nambu-Jona-Lasinio (PNJL) model we go beyond the saddle-point approximation in a mean-field calculation and introduce fluctuations around the mean fields. The impact of fluctuations on the thermodynamics of the model in the two-flavor case becomes evident by studying the second-order Taylor expansion coefficients of the thermodynamic grand-canonical partition function with respect to the quark chemical potential. Here we show a comparison with extrapolations from lattice QCD. We find that in order to reproduce lattice data for the flavor non-diagonal quark susceptibilities the introduction of fluctuations is unavoidable.",

author = "M. Cristoforetti and T. Hell and B. Klein and W. Weise",

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T1 - Thermodynamic quark susceptibilties in the PNJL model

AU - Cristoforetti, M.

AU - Hell, T.

AU - Klein, B.

AU - Weise, W.

N1 - Publisher Copyright: © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.

PY - 2010

Y1 - 2010

N2 - Applying Monte-Carlo methods to the Polyakov-loop extended Nambu-Jona-Lasinio (PNJL) model we go beyond the saddle-point approximation in a mean-field calculation and introduce fluctuations around the mean fields. The impact of fluctuations on the thermodynamics of the model in the two-flavor case becomes evident by studying the second-order Taylor expansion coefficients of the thermodynamic grand-canonical partition function with respect to the quark chemical potential. Here we show a comparison with extrapolations from lattice QCD. We find that in order to reproduce lattice data for the flavor non-diagonal quark susceptibilities the introduction of fluctuations is unavoidable.

AB - Applying Monte-Carlo methods to the Polyakov-loop extended Nambu-Jona-Lasinio (PNJL) model we go beyond the saddle-point approximation in a mean-field calculation and introduce fluctuations around the mean fields. The impact of fluctuations on the thermodynamics of the model in the two-flavor case becomes evident by studying the second-order Taylor expansion coefficients of the thermodynamic grand-canonical partition function with respect to the quark chemical potential. Here we show a comparison with extrapolations from lattice QCD. We find that in order to reproduce lattice data for the flavor non-diagonal quark susceptibilities the introduction of fluctuations is unavoidable.

UR - https://www.scopus.com/pages/publications/85055322364

M3 - Conference article

AN - SCOPUS:85055322364

SN - 1824-8039

VL - 105

JO - Proceedings of Science

JF - Proceedings of Science

T2 - 28th International Symposium on Lattice Field Theory, Lattice 2010

Y2 - 14 June 2010 through 19 June 2010

ER -

Thermodynamic quark susceptibilties in the PNJL model

Abstract

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