QCD equation of state to from lattice QCD
Abstract
In this work, we calculated the QCD equation of state using Taylor expansions that include contributions from up to sixth order in the baryon, strangeness and electric charge chemical potentials. Calculations have been performed with the Highly Improved Staggered Quark action in the temperature range T ϵ [135 MeV, 330 MeV] using up to four different sets of lattice cut-offs corresponding to lattices of size N$$3\atop{σ}$$ × Nτ with aspect ratio Nσ/Nτ = 4 and Nτ = 6-16. The strange quark mass is tuned to its physical value and we use two strange to light quark mass ratios ms/ml = 20 and 27, which in the continuum limit correspond to a pion mass of about 160 MeV and 140 MeV respectively. Sixth-order results for Taylor expansion coefficients are used to estimate truncation errors of the fourth-order expansion. We show that truncation errors are small for baryon chemical potentials less then twice the temperature (µB ≤ 2T ). The fourth-order equation of state thus is suitable for √the modeling of dense matter created in heavy ion collisions with center-of-mass energies down to √sNN ~ 12 GeV. We provide a parametrization of basic thermodynamic quantities that can be readily used in hydrodynamic simulation codes. The results on up to sixth order expansion coefficients of bulk thermodynamics are used for the calculation of lines of constant pressure, energy and entropy densities in the T -µB plane and are compared with the crossover line for the QCD chiral transition as well as with experimental results on freeze-out parameters in heavy ion collisions. These coefficients also provide estimates for the location of a possible critical point. Lastly, we argue that results on sixth order expansion coefficients disfavor the existence of a critical point in the QCD phase diagram for µB/T ≤ 2 and T/Tc(µB = 0) > 0.9.
- Authors:
-
- Michigan State Univ., East Lansing, MI (United States). Department of Computational Mathematics, Science and Engineering and Department of Physics and Astronomy
- China Central Normal Univ., Wuhan (China). Key Laboratory of Quark & Lepton Physics (MOE) and Institute of Particle Physics
- Indian Institute of Science, Bangalore (India). Center for High Energy Physics
- China Central Normal Univ., Wuhan (China). Key Laboratory of Quark & Lepton Physics (MOE) and Institute of Particle Physics; University of Bielefeld (Germany). Faculty of Physics
- University of Bielefeld (Germany). Faculty of Physics; Brookhaven National Lab. (BNL), Upton, NY (United States). Physics Department
- University of Bielefeld (Germany). Faculty of Physics
- Kyoto University (Japan). Yukawa Institute for Theoretical Physics
- Brookhaven National Lab. (BNL), Upton, NY (United States). Physics Department
- Brookhaven National Lab. (BNL), Upton, NY (United States). Physics Department; University of Tsukuba (Japan). Center for Computational Sciences
- University of Bielefeld (Germany). Faculty of Physics ; Brookhaven National Lab. (BNL), Upton, NY (United States). Physics Department
- University of Regensburg (Germany). Institute of Theoretical Physics
- NVIDIA GmbH (Germany)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP); USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR)
- OSTI Identifier:
- 1376098
- Alternate Identifier(s):
- OSTI ID: 1346090; OSTI ID: 1431282
- Report Number(s):
- BNL-113924-2017-JA; BNL-203400-2018-JAAM
Journal ID: ISSN 2470-0010
- Grant/Contract Number:
- SC0012704; SC001270; 05P12PBCTA
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. D.
- Additional Journal Information:
- Journal Volume: 95; Journal Issue: 5; Journal ID: ISSN 2470-0010
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS
Citation Formats
Bazavov, A., Ding, H. -T., Hegde, P., Kaczmarek, O., Karsch, F., Laermann, E., Maezawa, Y., Mukherjee, Swagato, Ohno, H., Petreczky, P., Sandmeyer, H., Steinbrecher, P., Schmidt, C., Sharma, S., Soeldner, W., and Wagner, M. QCD equation of state to O(μB6) from lattice QCD. United States: N. p., 2017.
Web. doi:10.1103/PhysRevD.95.054504.
Bazavov, A., Ding, H. -T., Hegde, P., Kaczmarek, O., Karsch, F., Laermann, E., Maezawa, Y., Mukherjee, Swagato, Ohno, H., Petreczky, P., Sandmeyer, H., Steinbrecher, P., Schmidt, C., Sharma, S., Soeldner, W., & Wagner, M. QCD equation of state to O(μB6) from lattice QCD. United States. https://doi.org/10.1103/PhysRevD.95.054504
Bazavov, A., Ding, H. -T., Hegde, P., Kaczmarek, O., Karsch, F., Laermann, E., Maezawa, Y., Mukherjee, Swagato, Ohno, H., Petreczky, P., Sandmeyer, H., Steinbrecher, P., Schmidt, C., Sharma, S., Soeldner, W., and Wagner, M. Tue .
"QCD equation of state to O(μB6) from lattice QCD". United States. https://doi.org/10.1103/PhysRevD.95.054504. https://www.osti.gov/servlets/purl/1376098.
@article{osti_1376098,
title = {QCD equation of state to O(μB6) from lattice QCD},
author = {Bazavov, A. and Ding, H. -T. and Hegde, P. and Kaczmarek, O. and Karsch, F. and Laermann, E. and Maezawa, Y. and Mukherjee, Swagato and Ohno, H. and Petreczky, P. and Sandmeyer, H. and Steinbrecher, P. and Schmidt, C. and Sharma, S. and Soeldner, W. and Wagner, M.},
abstractNote = {In this work, we calculated the QCD equation of state using Taylor expansions that include contributions from up to sixth order in the baryon, strangeness and electric charge chemical potentials. Calculations have been performed with the Highly Improved Staggered Quark action in the temperature range T ϵ [135 MeV, 330 MeV] using up to four different sets of lattice cut-offs corresponding to lattices of size N$3\atop{σ}$ × Nτ with aspect ratio Nσ/Nτ = 4 and Nτ = 6-16. The strange quark mass is tuned to its physical value and we use two strange to light quark mass ratios ms/ml = 20 and 27, which in the continuum limit correspond to a pion mass of about 160 MeV and 140 MeV respectively. Sixth-order results for Taylor expansion coefficients are used to estimate truncation errors of the fourth-order expansion. We show that truncation errors are small for baryon chemical potentials less then twice the temperature (µB ≤ 2T ). The fourth-order equation of state thus is suitable for √the modeling of dense matter created in heavy ion collisions with center-of-mass energies down to √sNN ~ 12 GeV. We provide a parametrization of basic thermodynamic quantities that can be readily used in hydrodynamic simulation codes. The results on up to sixth order expansion coefficients of bulk thermodynamics are used for the calculation of lines of constant pressure, energy and entropy densities in the T -µB plane and are compared with the crossover line for the QCD chiral transition as well as with experimental results on freeze-out parameters in heavy ion collisions. These coefficients also provide estimates for the location of a possible critical point. Lastly, we argue that results on sixth order expansion coefficients disfavor the existence of a critical point in the QCD phase diagram for µB/T ≤ 2 and T/Tc(µB = 0) > 0.9.},
doi = {10.1103/PhysRevD.95.054504},
journal = {Physical Review. D.},
number = 5,
volume = 95,
place = {United States},
year = {Tue Mar 07 00:00:00 EST 2017},
month = {Tue Mar 07 00:00:00 EST 2017}
}
Web of Science
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- Zhang, Hui; Hou, Defu; Kojo, Toru
- Physical Review D, Vol. 96, Issue 11
Looking for the Phase Transition—Recent NA61/SHINE Results
journal, March 2018
- Turko, Ludwik
- Universe, Vol. 4, Issue 3
Temperature Dependence of the Axion Mass in a Scenario Where the Restoration of Chiral Symmetry Drives the Restoration of the UA(1) Symmetry
journal, October 2019
- Horvatić, Davor; Kekez, Dalibor; Klabučar, Dubravko
- Universe, Vol. 5, Issue 10
Baryon number probability distribution at finite temperature
text, January 2018
- Sun, Ke-xin; Wen, Rui; Fu, Wei-jie
- arXiv
Equation of state of a quark-meson mixture in the improved Polyakov–Nambu–Jona-Lasinio model at finite chemical potential
journal, October 2017
- Torres-Rincon, Juan M.; Aichelin, Joerg
- Physical Review C, Vol. 96, Issue 4
Landau and Eckart frames for relativistic fluids in nuclear collisions
journal, July 2019
- Monnai, Akihiko
- Physical Review C, Vol. 100, Issue 1
Dynamical versus equilibrium properties of the QCD phase transition: A holographic perspective
journal, July 2017
- Rougemont, Romulo; Critelli, Renato; Noronha-Hostler, Jacquelyn
- Physical Review D, Vol. 96, Issue 1
Search for the QCD critical point with fluctuations of conserved quantities in relativistic heavy-ion collisions at RHIC: an overview
journal, July 2017
- Luo, Xiaofeng; Xu, Nu
- Nuclear Science and Techniques, Vol. 28, Issue 8
The analytic structure of thermodynamic systems with repulsive interactions
text, January 2019
- Taradiy, Kirill; Motornenko, Anton; Vovchenko, Volodymyr
- arXiv
Analytic structure of thermodynamic systems with repulsive interactions
journal, December 2019
- Taradiy, Kirill; Motornenko, Anton; Vovchenko, Volodymyr
- Physical Review C, Vol. 100, Issue 6
Thermodynamics of a quark-gluon plasma at finite baryon density
journal, October 2019
- Khaidukov, Z. V.; Simonov, Yu. A.
- Physical Review D, Vol. 100, Issue 7
Lattice-based equation of state at finite baryon number, electric charge, and strangeness chemical potentials
journal, December 2019
- Noronha-Hostler, J.; Parotto, P.; Ratti, C.
- Physical Review C, Vol. 100, Issue 6
Calculating the equation of state of dense quark-gluon plasma using the complex Langevin equation
journal, October 2019
- Sexty, Dénes
- Physical Review D, Vol. 100, Issue 7
Critical point signatures in the cluster expansion in fugacities
text, January 2020
- Vovchenko, Volodymyr; Greiner, Carsten; Koch, Volker
- GSI Helmholtzzentrum fuer Schwerionenforschung, GSI, Darmstadt
Cluster expansion model for QCD baryon number fluctuations: No phase transition at
journal, June 2018
- Vovchenko, Volodymyr; Steinheimer, Jan; Philipsen, Owe
- Physical Review D, Vol. 97, Issue 11
Strangeness neutrality and baryon-strangeness correlations
text, January 2018
- Fu, Wei-jie; Pawlowski, Jan M.; Rennecke, Fabian
- arXiv
Cosmic QCD Epoch at Nonvanishing Lepton Asymmetry
journal, November 2018
- Wygas, Mandy M.; Oldengott, Isabel M.; Bödeker, Dietrich
- Physical Review Letters, Vol. 121, Issue 20
Thermodynamic Geometry of Nambu -- Jona Lasinio model
text, January 2019
- Castorina, P.; Lanteri, D.; Mancani, S.
- arXiv
Baryon clustering at the critical line and near the hypothetical critical point in heavy-ion collisions
journal, August 2019
- Shuryak, Edward; Torres-Rincon, Juan M.
- Physical Review C, Vol. 100, Issue 2
The phase structure of QCD
journal, August 2017
- Schmidt, Christian; Sharma, Sayantan
- Journal of Physics G: Nuclear and Particle Physics, Vol. 44, Issue 10
Equation of state at finite densities for QCD matter in nuclear collisions
journal, August 2019
- Monnai, Akihiko; Schenke, Björn; Shen, Chun
- Physical Review C, Vol. 100, Issue 2
Modeling baryonic interactions with the Clausius-type equation of state
journal, February 2018
- Vovchenko, Volodymyr; Gorenstein, Mark I.; Stoecker, Horst
- The European Physical Journal A, Vol. 54, Issue 2
Skewness and kurtosis of net baryon-number distributions at small values of the baryon chemical potential
text, January 2017
- Bazavov, A.; Ding, H. -T.; Hegde, P.
- Universität Regensburg
Thermodynamical consistency of quasiparticle model at finite baryon density
text, January 2018
- Ma, Hong-Hao; Lin, Kai; Qian, Wei-Liang
- arXiv
QCD phase structure at finite temperature and density
journal, March 2020
- Fu, Wei-jie; Pawlowski, Jan M.; Rennecke, Fabian
- Physical Review D, Vol. 101, Issue 5
Cosmic QCD Epoch at Nonvanishing Lepton Asymmetry
text, January 2018
- Wygas, Mandy M.; Oldengott, Isabel M.; Bodeker, Dietrich
- arXiv
Modeling baryonic interactions with the Clausius-type equation of state
text, January 2017
- Vovchenko, Volodymyr; Gorenstein, Mark I.; Stoecker, Horst
- arXiv
Anisotropic pressure of deconfined QCD matter in presence of strong magnetic field within one-loop approximation
journal, May 2019
- Karmakar, Bithika; Ghosh, Ritesh; Bandyopadhyay, Aritra
- Physical Review D, Vol. 99, Issue 9
Baryon clustering at the critical line and near the hypothetical critical point in heavy-ion collisions
text, January 2018
- Shuryak, Edward; Torres-Rincon, Juan M.
- arXiv
Effects of the QCD equation of state and lepton asymmetry on primordial gravitational waves
journal, May 2019
- Hajkarim, Fazlollah; Schaffner-Bielich, Jürgen; Wystub, Stephan
- Physical Review D, Vol. 99, Issue 10
Thermodynamic and transport properties in Au + Au collisions at RHIC energies from the clustering of color strings
text, January 2017
- Sahoo, Pragati; Tiwari, Swatantra Kumar; De, Sudipan
- arXiv