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Based on transport equations we argue that the chiral dynamics in heavy-ion collisions at high collision energies effectively decouples from the thermal physics of the fireball. With full decoupling at LHC energies the chiral condensate…

Nuclear Theory · Physics 2020-04-21 Marcus Bluhm , Marlene Nahrgang , Jan M. Pawlowski

The Helmholtz free energy density is parametrized as a function of temperature and baryon density near the chiral critical point of QCD. The parametrization incorporates the expected critical exponents and amplitudes. An expansion away from…

Nuclear Theory · Physics 2014-11-21 Joseph Kapusta

In this work we study the consequences of a longitudinal Bjorken expansion and a Hubble-like temperature cooling scenario on a 1+1D non-linear model of the diffusive dynamics of fluctuations in the net-baryon density. The equilibrium…

Nuclear Theory · Physics 2023-02-01 Grégoire Pihan , Marcus Bluhm , Masakiyo Kitazawa , Taklit Sami , Marlene Nahrgang

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…

High Energy Physics - Phenomenology · Physics 2021-10-04 Wei-jie Fu , Xiaofeng Luo , Jan M. Pawlowski , Fabian Rennecke , Rui Wen , Shi Yin

Understanding the phase diagram of QCD by measuring fluctuations of conserved charges in heavy-ion collision is one of the main goals of the beam energy scan program at RHIC. Within this work, we calculate the role of hadronic interactions…

Nuclear Theory · Physics 2023-05-10 Jan Hammelmann , Hannah Elfner

We calculate the density fluctuations of net baryon number up to sixth order induced by the interactions of nuclear matter, and explore their relationship with the nuclear liquid-gas phase transition (LGPT), including the stable and…

High Energy Physics - Phenomenology · Physics 2023-12-27 Xinran Yang , Guoyun Shao , Weibo He

We consider the Polyakov loop-extended two flavor chiral quark--meson model and discuss critical phenomena related with the spontaneous breaking of the chiral symmetry. The model is explored beyond the mean-field approximation in the…

High Energy Physics - Phenomenology · Physics 2015-05-30 V. Skokov , B. Friman , F. Karsch , K. Redlich

We argue that by measuring higher moments of the net proton number fluctuations in heavy ion collisions (HIC) one can probe the QCD chiral cross over transition experimentally. We discuss the properties of fluctuations of the net baryon…

High Energy Physics - Phenomenology · Physics 2015-06-05 Krzysztof Redlich

The properties of the scalar and vector correlations in the hot and/or dense hadronic matter close to chiral transition are discussed. Presuming that the linear realization of chiral symmetry will become appropriate at least near the…

High Energy Physics - Phenomenology · Physics 2009-11-07 Teiji Kunihiro

We discuss the relevance of higher order moments of net baryon number fluctuations for the analysis of freeze-out and critical conditions in heavy ion collisions at LHC and RHIC. Using properties of O(4) scaling functions, we discuss the…

High Energy Physics - Phenomenology · Physics 2015-05-27 B. Friman , F. Karsch , K. Redlich , V. Skokov

We study the fluctuations and correlations of conserved charges, i.e. the baryon number, electric charge and the strangeness at finite temperature and nonzero baryon chemical potential with an effective model. The fluctuations are…

High Energy Physics - Phenomenology · Physics 2010-10-27 Wei-jie Fu , Yue-liang Wu

In this paper we study the influence of hadronic resonances on the phase diagram calculated with an effective chiral flavour SU(3) model. We show that varying the couplings of the baryonic resonances to the attractive scalar and the…

High Energy Physics - Phenomenology · Physics 2015-03-19 Philip Rau , Jan Steinheimer , Stefan Schramm , Horst Stöcker

This paper investigates the dynamics of the net-baryon multiplicity fluctuations near the QCD critical point, within the inhomogeneous temperature and baryon chemical potential profile of quark-gluon plasma from the hydrodynamics. The…

Nuclear Theory · Physics 2025-02-04 Shanjin Wu

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…

High Energy Physics - Lattice · Physics 2025-04-02 Sipaz Sharma , Frithjof Karsch , Peter Petreczky

Using a phenomenological model with vector-type interactions, we discuss a role of repulsive force in the quark-hadron phase transition at high density. For realization of the quark phase at high density, strong vector coupling is needed in…

Nuclear Theory · Physics 2007-05-23 Hiroaki Kouno

We investigate the phase structure of strongly interacting matter and baryon number fluctuations in the Polyakov loop improved Nambu--Jona-Lasinio (PNJL) model. The calculation shows that both the chiral and deconfinement transitions, as…

High Energy Physics - Phenomenology · Physics 2017-08-29 Guo-yun Shao , Zhan-duo Tang , Xue-yan Gao , Wei-bo He

The combined effect of the repulsive vector interaction and the positive electric chemical potential on the chiral phase transition is investigated by considering neutral color superconductivity. Under the charge-neutrality constraint, the…

High Energy Physics - Phenomenology · Physics 2011-01-20 Zhao Zhang , Teiji Kunihiro

We develop a dynamical model to describe critical fluctuations in heavy-ion collisions, incorporating the baryon diffusion current and chiral condensate as dynamical degrees of freedom, to address their nontrivial scale separation. The…

Nuclear Theory · Physics 2025-02-26 Azumi Sakai , Koichi Murase , Hirotsugu Fujii , Tetsufumi Hirano

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

Membrane-mediated particle interactions depend both on the properties of the particles themselves and the membrane environment in which they are suspended. Experiments have shown that chiral rod-like inclusions dissolved in a colloidal…