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In this contribution, we use the parity doublet model to investigate the fluctuations of the net-baryon number density. We discuss the systematics of the susceptibilities and their ratios for nucleons of positive and negative parity, as…

Nuclear Theory · Physics 2023-12-12 Michał Marczenko , Volker Koch , Krzysztof Redlich , Chihiro Sasaki

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…

Nuclear Theory · Physics 2023-04-05 Michał Marczenko , Krzysztof Redlich , Chihiro Sasaki

Critical phenomena in phase transitions of strongly interacting matter, governed by quantum chromodynamics, are inherently encoded in the fluctuations of conserved charges. In this work, we study the net-baryon number density fluctuations,…

High Energy Physics - Phenomenology · Physics 2024-07-16 Michał Marczenko

We study net-baryon number density fluctuations in isospin-symmetric matter near the nuclear liquid-gas phase transition using the parity doublet model. We analyze second-order susceptibilities of net-proton and net-neutron numbers and…

Nuclear Theory · Physics 2025-12-24 Michał Marczenko

We investigate the fluctuations of the net-baryon number near the critical point of the liquid-gas phase transition. We use the parity doublet model in the mean-field approximation fixed to the zero-temperature properties of nuclear matter…

Nuclear Theory · Physics 2025-08-06 Michał Marczenko , Krzysztof Redlich , Chihiro Sasaki

We study the critical properties of net-baryon-number fluctuations at the chiral restoration transition in a medium at finite temperature and net baryon density. The chiral dynamics of quantum chromodynamics (QCD) is modeled by the…

High Energy Physics - Phenomenology · Physics 2017-08-02 Gabor Almasi , Bengt Friman , Krzysztof Redlich

We discuss the critical properties of net-baryon-number fluctuations at the chiral restoration transition in matter at nonzero temperature and net-baryon density. The chiral dynamics of quantum chromodynamics (QCD) is modeled by the…

High Energy Physics - Phenomenology · Physics 2017-03-22 Bengt Friman , Gabor Almasi , Krzysztof Redlich

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 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 region of large net-baryon densities in the QCD phase diagram is expected to exhibit a first-order phase transition. Experimentally, its study will be one of the primaryobjectives for the upcoming FAIR accelerator. We model the…

High Energy Physics - Phenomenology · Physics 2015-06-23 Christoph Herold , Marlene Nahrgang , Yupeng Yan , Chinorat Kobdaj

We study the mean-field thermodynamics and the characteristics of the net-baryon number fluctuations at the phase boundaries for the chiral and deconfinement transitions in the Hybrid Quark-Meson-Nucleon model. The chiral dynamics is…

High Energy Physics - Phenomenology · Physics 2018-02-16 Michał Marczenko , Chihiro Sasaki

We study the variance and kurtosis of the net-baryon number in a fluid dynamical model for heavy-ion collisions. It is based on an effective chiral model with dilatons for the strong coupling regime of QCD. Taking into account spinodal…

High Energy Physics - Phenomenology · Physics 2014-12-22 Christoph Herold , Marlene Nahrgang , Yupeng Yan , Chinorat Kobdaj

The description of dynamical fluctuations near the QCD critical point in heavy-ion collisions is crucial for understanding the existing and upcoming experimental data from the beam energy scan programs. In this talk we discuss the evolution…

Nuclear Theory · Physics 2018-04-10 Marlene Nahrgang , Marcus Bluhm , Thomas Schaefer , Steffen A. Bass

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 explore fluctuations of the net-baryon number density in hadronic matter at vanishing chemical potential. We discuss the interplay between chiral dynamics and repulsive interactions and their influence on the properties of these…

High Energy Physics - Phenomenology · Physics 2021-09-30 Michał Marczenko , Krzysztof Redlich , Chihiro Sasaki

We investigate fluctuations of the net-baryon number density in hot hadronic matter. We discuss the interplay between chiral dynamics and repulsive interactions and their influence on the properties of these fluctuations near the chiral…

High Energy Physics - Phenomenology · Physics 2021-03-29 Michał Marczenko , Krzysztof Redlich , Chihiro Sasaki

In the vicinity of the quark-hadron critical point, in the phase diagram of QCD, simple power-law relations constrain the mid-rapidity net-baryon density profile, for different heavy-ion processes, in a unifying scheme. The corresponding…

High Energy Physics - Phenomenology · Physics 2007-05-23 N. G. Antoniou , F. K. Diakonos , A. S. Kapoyannis

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

We use an improved version of the SU(3) flavour parity-doublet quark-hadron model to investigate the higher order baryon number susceptibilities near the chiral and the nuclear liquid-gas transitions. The parity-doublet model has been…

Nuclear Theory · Physics 2017-08-30 A. Mukherjee , S. Schramm , J. Steinheimer

Event-by-event fluctuations of the net-proton number studied in heavy-ion collisions provide an important means in the search for the conjectured critical end point (CP) in the QCD phase diagram. We propose a phenomenological model in which…

Nuclear Theory · Physics 2020-04-22 Michał Szymański , Marcus Bluhm , Krzysztof Redlich , Chihiro Sasaki
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