Fluctuations and Correlations of net baryon number, electric charge, and strangeness: A comparison of lattice QCD results with the hadron resonance gas model
Alexei Bazavov,Tanmoy Bhattacharya,Carleton DeTar,Heng-Tong Ding,Steven Gottlieb,Rajan Gupta,P. Hegde,Urs M. Heller,Frithjof Karsch,Edwin Laermann,Ludmila Levkova,Swagata Mukherjee,Peter Petreczky,Christian Schmidt,R. A. Soltz,W. Soeldner,Robert L. Sugar,Pavlos Vranas +17 more
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In this article, the quadratic fluctuations of net baryon number, electric charge and strangeness as well as correlations among these conserved charges in ($2+1$)-flavor lattice QCD at zero chemical potential were calculated using tree-level improved gauge and the highly improved staggered quark actions with almost physical light and strange quark masses at three different values of the lattice cutoff.Abstract:
We calculate the quadratic fluctuations of net baryon number, electric charge and strangeness as well as correlations among these conserved charges in ($2+1$)-flavor lattice QCD at zero chemical potential. Results are obtained using calculations with tree-level improved gauge and the highly improved staggered quark actions with almost physical light and strange quark masses at three different values of the lattice cutoff. Our choice of parameters corresponds to a value of 160 MeV for the lightest pseudoscalar Goldstone mass and a physical value of the kaon mass. The three diagonal charge susceptibilities and the correlations among conserved charges have been extrapolated to the continuum limit in the temperature interval $150\text{ }\text{ }\mathrm{MeV}\ensuremath{\le}T\ensuremath{\le}250\text{ }\text{ }\mathrm{MeV}$. We compare our results with the hadron resonance gas (HRG) model calculations and find agreement with HRG model results only for temperatures $T\ensuremath{\lesssim}150\text{ }\text{ }\mathrm{MeV}$. We observe significant deviations in the temperature range $160\text{ }\text{ }\mathrm{MeV}\ensuremath{\lesssim}T\ensuremath{\lesssim}170\text{ }\text{ }\mathrm{MeV}$ and qualitative differences in the behavior of the three conserved charge sectors. At $T\ensuremath{\simeq}160\text{ }\text{ }\mathrm{MeV}$ quadratic net baryon number fluctuations in QCD agree with HRG model calculations, while the net electric charge fluctuations in QCD are about 10% smaller and net strangeness fluctuations are about 20% larger. These findings are relevant to the discussion of freeze-out conditions in relativistic heavy ion collisions.read more
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Finite Temperature Field Theory
TL;DR: The finite temperature field theory is universally compatible with any devices to read and is available in the book collection an online access to it is set as public so you can download it instantly.
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QCD and strongly coupled gauge theories: challenges and perspectives
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TL;DR: In this paper, the progress, current status, and open challenges of QCD-driven physics, in theory and in experiment, are highlighted, highlighting how the strong interaction is intimately connected to a broad sweep of physical problems, in settings ranging from astrophysics and cosmology to strongly coupled, complex systems in particle and condensed-matter physics, as well as searches for physics beyond the Standard Model.
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Chiral crossover in QCD at zero and non-zero chemical potentials
Alexei Bazavov,Heng-Tong Ding,P. Hegde,Olaf Kaczmarek,Olaf Kaczmarek,Frithjof Karsch,Frithjof Karsch,Nikhil Karthik,Edwin Laermann,Anirban Lahiri,Rasmus Larsen,S. Li,Swagata Mukherjee,Hiroshi Ohno,Peter Petreczky,Hauke Sandmeyer,Christian Schmidt,Sayantan Sharma,P. Steinbrecher +18 more
TL;DR: In this article, the results for pseudo-critical temperatures of QCD chiral crossovers at zero and non-zero values of baryon (B), strangeness (S), electric charge (Q), and isospin (I) chemical potentials were obtained using lattice QCD calculations carried out with two degenerate up and down dynamical quarks and a dynamical strange quark, with quark masses corresponding to physical values of pion and kaon masses in the continuum limit.
Journal ArticleDOI
QCD equation of state to O (μB6) from lattice QCD
Alexei Bazavov,Heng-Tong Ding,P. Hegde,Olaf Kaczmarek,Olaf Kaczmarek,Frithjof Karsch,Frithjof Karsch,Edwin Laermann,Y. Maezawa,Swagata Mukherjee,Hiroshi Ohno,Hiroshi Ohno,Peter Petreczky,Hauke Sandmeyer,P. Steinbrecher,P. Steinbrecher,Christian Schmidt,Sapana Sharma,W. Soeldner,M. Wagner +19 more
TL;DR: In this article, the authors 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.
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Thermodynamics of strong-interaction matter from Lattice QCD
TL;DR: In this paper, a review of results from lattice QCD calculations on the thermodynamics of strong-interaction matter with emphasis on input these calculations can provide to the exploration of the phase diagram and properties of hot and dense matter created in heavy ion experiments is presented.
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Finite-Temperature Field Theory: Principles and Applications
Joseph I. Kapusta,Charles Gale +1 more
TL;DR: The 2006 second edition of this book as mentioned in this paper develops the basic formalism and theoretical techniques for studying relativistic quantum field theory at high temperature and density, including functional integral representation of the partition function, diagrammatic expansions, linear response theory, screening and plasma oscillations, spontaneous symmetry breaking, Goldstone theorem, resummation and hard thermal loops, lattice gauge theory, phase transitions, nucleation theory, quark-gluon plasma, and color superconductivity.
Finite Temperature Field Theory
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