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The critical behavior of the chiral quark-meson model is studied within the Functional Renormalization Group (FRG). We derive the flow equation for the scale dependent thermodynamic potential at finite temperature and density in the…

High Energy Physics - Phenomenology · Physics 2014-11-18 B. Stokic , B. Friman , K. Redlich

We calculate the baryon chemical potential ($\mu_B$) dependence of thermodynamic observables, i.e., pressure, baryon number density and susceptibility by lattice QCD using the canonical approach. We compare the results with those by the…

High Energy Physics - Lattice · Physics 2016-06-01 Ryutaro Fukuda , Atsushi Nakamura , Shotaro Oka

We update lattice QCD results for second order cumulants of conserved charge fluctuations and correlations at non-zero temperature and vanishing values of the conserved charge chemical potentials. We compare these results to hadron…

High Energy Physics - Lattice · Physics 2021-11-08 D. Bollweg , J. Goswami , O. Kaczmarek , F. Karsch , Swagato Mukherjee , P. Petreczky , C. Schmidt , P. Scior

The freeze-out curve, which describes a vast amount of precise experimental data in heavy ion collisions, provides a relation between the colliding energy and the thermodynamical parameters of the fireball. The variance, skew and kurtosis…

High Energy Physics - Phenomenology · Physics 2011-12-23 Rajiv V. Gavai

We calculate the form factors for the baryon number violation processes of a heavy-flavor baryon decaying into a pseudoscalar meson and a lepton. In the framework of the Standard Model effective field theory, the leptoquark operators at the…

High Energy Physics - Phenomenology · Physics 2024-05-21 Lei-Yi Li , Cai-Dian Lü , Jin Wang , Yan-Bing Wei

Using combined strong coupling and hopping parameter expansions, we derive an effective three-dimensional theory from thermal lattice QCD with heavy Wilson quarks. The theory depends on traced Polyakov loops only and correctly reflects the…

High Energy Physics - Lattice · Physics 2012-01-27 Michael Fromm , Jens Langelage , Stefano Lottini , Owe Philipsen

The characteristics of a thermal system depend strongly on its response to thermal gradients and the underlying microscopic interactions among constituents. In the present study, we investigate the thermodynamic and transport properties of…

High Energy Physics - Phenomenology · Physics 2026-04-08 Rishabh Kumar Tiwari , Kangkan Goswami , Suraj Prasad , Captain R. Singh , Raghunath Sahoo , Mohammad Yousuf Jamal

The cold and dense QCD equation of state (EoS) at high baryon chemical potential $\mu_B$ involves at order $\alpha^2_S$ an all-loop summation of the soft mode $m_E\sim \alpha_S^{1/2} \mu_B$ contributions. Recently, the complete soft…

High Energy Physics - Phenomenology · Physics 2022-11-30 Loïc Fernandez , Jean-Loïc Kneur

The phase diagram of two-color QCD as a function of temperature and baryon chemical potential is considered. Using a low-energy chiral Lagrangian based on the symmetries of the microscopic theory, we determine, at the one-loop level, the…

High Energy Physics - Phenomenology · Physics 2015-06-25 K. Splittorff , D. Toublan , J. J. M. Verbaarschot

A chiral model based on nucleons interacting via boson exchange is investigated. Fluctuation effects are included consistently beyond the mean-field approximation in the framework of the functional renormalization group. The liquid-gas…

Nuclear Theory · Physics 2014-11-03 Matthias Drews , Wolfram Weise

We use the Nambu--Jona-Lasinio model to study the effects of the isospin chemical potential on the QCD phase diagram at nonzero temperature and baryon chemical potential. We find that the phase diagram is qualitatively altered by a small…

High Energy Physics - Phenomenology · Physics 2008-11-26 D. Toublan , J. B. Kogut

The values of the presently available truncated perturbative expressions for the pressure of the quark-gluon plasma at finite temperatures and finite chemical potential are trustworthy only at very large energies. When used down to…

High Energy Physics - Phenomenology · Physics 2008-11-26 G. Cvetic , R. Koegerler

Taylor expansion in powers of baryon chemical potential ($\mu_B$) is an oft-used method in lattice QCD to compute QCD thermodynamics for $\mu_B>0$. Based only upon the few known lowest order Taylor coefficients, it is difficult to discern…

High Energy Physics - Lattice · Physics 2022-01-24 Sourav Mondal , Swagato Mukherjee , Prasad Hegde

We study QCD at finite temperature and non-zero chemical potential to derive the critical temperature at the chiral phase transition (crossover). We solve a set of Dyson--Schwinger partial differential equations using the exact solution for…

High Energy Physics - Phenomenology · Physics 2025-06-03 Arpan Chatterjee , Marco Frasca , Anish Ghoshal , Stefan Groote

Using numerical simulations of lattice QCD with physical quark masses, we reveal the influence of magnetic-field background on chiral and deconfinement crossovers in finite-temperature QCD at low baryonic density. In the absence of…

High Energy Physics - Lattice · Physics 2019-12-18 V. V. Braguta , M. N. Chernodub , A. Yu. Kotov , A. V. Molochkov , A. A. Nikolaev

We study a pseudogap region of the mixed boson fermion system using a recent formulation of the renormalization group technique through the set of infinitesimal unitary transformations. Renormalization of fermion energies gives rise to a…

Superconductivity · Physics 2016-08-31 T. Domanski , J. Ranninger

We discuss the thermodynamics of gluons in the background of static quark sources. In order to do so we formulate the quenched limit of QCD at non-zero baryon number. A first numerical analysis of this system shows that it undergoes a…

High Energy Physics - Lattice · Physics 2008-11-26 J. Engels , O. Kaczmarek , F. Karsch , E. Laermann

Using high-statistics datasets generated in (2+1)-flavor QCD calculations at finite temperature we construct estimators for the radius of convergence from an eighth order series expansion of the pressure as well as the number density. We…

High Energy Physics - Lattice · Physics 2023-01-11 Jishnu Goswami , Frithjof Karsch , Swagato Mukherjee , Christian Schmidt

The lattice simulations of $QC_2D$ with two flavors of staggered fermions and non-zero quark chemical potential $\mu_q$ have been performed. Dependencies of the Polyakov loop, chiral condensate and baryon number density on $\mu_q$ were…

High Energy Physics - Lattice · Physics 2016-02-17 V. V. Braguta , A. Yu. Kotov , A. A. Nikolaev , S. N. Valgushev

We discuss the extension of gauge-invariant electric and magnetic screening masses in the Quark-Gluon Plasma to the case of a finite baryon density, defining them in terms of a matrix of Polyakov loop correlators. We present lattice results…

High Energy Physics - Lattice · Physics 2018-04-04 Michele Andreoli , Claudio Bonati , Massimo D'Elia , Michele Mesiti , Francesco Negro , Andrea Rucci , Francesco Sanfilippo
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