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We analyze baryon number, strangeness and electric charge fluctuations as well as their correlations in QCD at high temperature. We present results obtained from lattice calculations performed with an improved staggered fermion action…

高能物理 - 格点 · 物理学 2013-05-29 M. Cheng , P. Hegde , C. Jung , F. Karsch , O. Kaczmarek , E. Laermann , R. D. Mawhinney , C. Miao , P. Petreczky , C. Schmidt , W. Soeldner

We study the spectrum of light baryons and hyperons as a function of temperature using lattice gauge theory methods. We find that masses of positive parity states are temperature independent, within errors, in the hadronic phase. The…

高能物理 - 格点 · 物理学 2019-11-06 Gert Aarts , Chris Allton , Davide de Boni , Jonas Glesaaen , Simon Hands , Benjamin Jäger , Jon-Ivar Skullerud

We present a lattice study of fluctuations and correlations among the conserved charges baryon number and strangeness in (2+1)-flavor QCD. The lattice calculations are based on a Taylor expansion of the pressure. Results are presented at…

高能物理 - 格点 · 物理学 2014-11-20 Christian Schmidt

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…

The hadron resonance gas (HRG) is a widely used description of matter under extreme conditions, e.g. in the context of heavy-ion phenomenology. Commonly used implementations of the HRG employ vacuum hadron masses throughout the hadronic…

高能物理 - 格点 · 物理学 2019-04-17 Gert Aarts , Chris Allton , Davide De Boni , Benjamin Jäger

We investigate the fluctuations of the net-baryon number density in dense hadronic matter. Chiral dynamics is modeled via the parity doublet Lagrangian, and the mean-field approximation is employed to account for chiral criticality. We…

核理论 · 物理学 2023-04-05 Michał Marczenko , Krzysztof Redlich , Chihiro Sasaki

Fluctuations and correlations of the net-baryon number play an important role in exploring critical phenomena in phase transitions of strongly interacting matter governed by Quantum chromodynamics (QCD). In this work, we use the parity…

高能物理 - 唯象学 · 物理学 2024-01-31 Volker Koch , Michał Marczenko , Krzysztof Redlich , Chihiro Sasaki

We compute high-order baryon number fluctuations at finite temperature and density within a QCD-assisted low energy effective field theory. Quantum, thermal and density fluctuations are incorporated with the functional renormalization group…

高能物理 - 唯象学 · 物理学 2021-10-04 Wei-jie Fu , Xiaofeng Luo , Jan M. Pawlowski , Fabian Rennecke , Rui Wen , Shi Yin

We calculate electric and baryonic charge fluctuations on the lattice. Results have been obtained with the highly improved staggered quark action (HISQ) and almost physical quark masses on lattices with spacial extent of $N_\tau=6,8,12$.…

高能物理 - 格点 · 物理学 2015-06-12 Christian Schmidt

We investigate the density fluctuations induced by hadronic interactions at low temperatures and large chemical potentials after the hadronization of quark-gluon plasma~(QGP). We analyze the structures of net-baryon number kurtosis and…

核理论 · 物理学 2020-04-29 Guo-yun Shao , Xue-yan Gao , Wei-bo He

We compare recent lattice results on fluctuations and correlations of strangeness, baryon number and electric charge obtained with p4 improved staggered action with the prediction of hadron resonance gas model. We show that hadron resonance…

高能物理 - 唯象学 · 物理学 2014-11-20 Pasi Huovinen , Peter Petreczky

Recent lattice QCD studies at vanishing density exhibit the parity-doubling structure for the low-lying baryons around the chiral crossover temperature. This finding is likely an imprint of the chiral symmetry restoration in the baryonic…

核理论 · 物理学 2018-12-21 Michał Marczenko , David Blaschke , Krzysztof Redlich , Chihiro Sasaki

Up to 6th order cumulants of fluctuations of net baryon-number, net electric charge and net strangeness as well as correlations among these conserved charge fluctuations are now being calculated in lattice QCD. These cumulants provide a…

高能物理 - 格点 · 物理学 2018-03-14 Frithjof Karsch

We construct net baryon number and strangeness susceptibilities as well as correlations between electric charge, strangeness and baryon number from experimental data on the particle production yields at midrapidity of the ALICE…

高能物理 - 唯象学 · 物理学 2016-11-23 P. Braun-Munzinger , A. Kalweit , K. Redlich , J. Stachel

We discuss the role of repulsive baryon-baryon interactions in a hadron gas using relativistic virial expansion and repulsive mean field approaches. The fluctuations of the baryon number as well as strangeness-baryon correlations are…

高能物理 - 唯象学 · 物理学 2018-03-26 P. Huovinen , P. Petreczky

We compare recent lattice QCD calculations of higher order cumulants of net-strangeness fluctuations with hadron resonance gas (HRG) model calculations. Up to the QCD transition temperature Tc=( 154 +/- 9) MeV we find good agreement between…

高能物理 - 格点 · 物理学 2013-12-31 Frithjof Karsch

We investigate the fate of baryons made out of u, d and s quarks in the hadronic gas and the quark-gluon plasma, using nonperturbative lattice simulations, employing the FASTSUM anisotropic Nf=2+1 ensembles. In the confined phase a strong…

高能物理 - 格点 · 物理学 2018-03-14 Gert Aarts , Chris Allton , Davide de Boni , Simon Hands , Benjamin Jäger , Chrisanthi Praki , Jon-Ivar Skullerud

We use up to fourth-order charm fluctuations and their correlations with net baryon number, electric charge, and strangeness fluctuations, calculated within the framework of lattice QCD, to study the continuum partial pressure contributions…

高能物理 - 格点 · 物理学 2025-04-02 Sipaz Sharma , Frithjof Karsch , Peter Petreczky

We study the equation of state, fluctuations and static correlators of electric charge, baryon number and strangeness, by considering a realization of the Hadron Resonance Gas model in the light flavor sector of QCD. We emphasize the…

高能物理 - 唯象学 · 物理学 2025-01-10 E. Megias , E. Ruiz Arriola , L. L. Salcedo

We compare the trace anomaly, strangeness and baryon number fluctuations calculated in lattice QCD with expectations based on hadron resonance gas model. We find that there is a significant discrepancy between the hadron resonance gas and…

高能物理 - 唯象学 · 物理学 2010-05-12 P. Huovinen , P. Petreczky
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