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A quantitatively reliable theoretical description of the dynamics of fluctuations in non-equilibrium is indispensable in the experimental search for the QCD critical point by means of ultra-relativistic heavy-ion collisions. In this work we…

核理论 · 物理学 2019-06-26 Marlene Nahrgang , Marcus Bluhm , Thomas Schaefer , Steffen A. Bass

Dynamical fluctuations in global conserved quantities such as baryon number, strangeness, or charge may be observed near a QCD critical point. Results from new measurements of dynamical $K/\pi$, $p/\pi$, and $K/p$ ratio fluctuations are…

核实验 · 物理学 2019-08-14 Terence J Tarnowsky

Fluctuations and correlations of conserved charges are sensitive observables for studying the QCD phase transition and critical point in high-energy heavy-ion collisions. We have studied the centrality and energy dependence of…

核实验 · 物理学 2017-02-01 Zhenzhen Yang , Xiaofeng Luo , Bedangadas Mohanty

Lattice QCD (LQCD) calculations predict that chiral symmetry is restored in a smooth crossover transition between a quark-gluon plasma and a hadron resonance gas (HRG) at vanishing net-baryon density, a condition realized in heavy-ion…

核实验 · 物理学 2025-10-14 Ilya Fokin

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 review recent results of net-proton multiplicity fluctuations from STAR experiment, aiming to locate the QCD critical point in high-energy nuclear collisions at RHIC. We show net-proton number cumulant and proton number factorial…

核实验 · 物理学 2026-04-15 Yu Zhang , Zhaohui Wang , Xiaofeng Luo , Nu Xu

Dynamical fluctuations in global conserved quantities such as baryon number, strangeness, or charge may be observed near a QCD critical point. Results from new measurements of dynamical $K/\pi$ and $p/\pi$ ratio fluctuations are presented.…

核实验 · 物理学 2019-08-21 Terence J Tarnowsky

It is shown that intermittency, a self-similar correlation with respect to the size of the phase space volume, is sensitive to critical density fluctuations of baryon numbers in a system belonging to the three-dimensional (3D) Ising…

核理论 · 物理学 2020-01-06 Jin Wu , Yufu Lin , Yuanfang Wu , Zhiming Li

A review is given on recent experimental and theoretical/phenomenological developments regarding the phase structure of the strongly interacting matter. Specifically, evolution with the collision energy of net-proton number fluctuations as…

高能物理 - 唯象学 · 物理学 2023-03-22 Anar Rustamov

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

Ratios of cumulants of net proton-number fluctuations measured by the STAR Collaboration show strong deviations from a skellam distribution, which should describe thermal properties of cumulant ratios, if proton-number fluctuations are…

高能物理 - 格点 · 物理学 2017-03-08 Frithjof Karsch

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

The skewness and the kurtosis of the baryon number distributions are computed within QCD-improved low energy effective models including quantum thermal and density fluctuations. The results are compared with the Beam Energy Scan experiment…

高能物理 - 唯象学 · 物理学 2016-06-01 Wei-jie Fu , Jan M. Pawlowski

One of the ultimate goals of nuclear collision experiments at high energy is to map the phase diagram of strongly interacting matter. A very challenging task is the determination of the QCD phase structure including the search for critical…

核实验 · 物理学 2021-02-03 Anar Rustamov

We present the first lattice QCD results of the second order fluctuations of and correlations among net baryon number, electric charge and strangeness in (2+1)-flavor lattice QCD in the presence of a background magnetic field with physical…

高能物理 - 格点 · 物理学 2022-08-16 Heng-Tong Ding , Sheng-Tai Li , Jun-Hong Liu , Xiao-Dan Wang

We investigate the role of a finite surface tension during the time-evolution of fluctuations in the net-baryon density. The systems in this study undergo a temperature evolution across the phase transition in the critical region of the QCD…

核理论 · 物理学 2019-11-21 Marcus Bluhm , Marlene Nahrgang

We present a subset of experimental results on charge fluctuation from the heavy-ion collisions to search for phase transition and location of critical point in the QCD phase diagram. Measurements from the heavy-ion experiments at the SPS…

核实验 · 物理学 2017-01-24 D. K. Mishra , P. Garg , P. K. Netrakanti , L. M. Pant , A. K. Mohanty

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 investigate the impact of the matter and glue dynamics on baryon number fluctuations and the kurtosis of baryon number distribution. This is done within the framework of QCD-improved low energy effective models. In particular we include…

高能物理 - 唯象学 · 物理学 2015-12-23 Wei-jie Fu , Jan M. Pawlowski

Recent results for moments of multiplicity distributions of net-protons and net-electric charge from the STAR collaboration are compared to lattice QCD results for higher order fluctuations of baryon number and electric charge by the…

高能物理 - 格点 · 物理学 2014-08-06 S. Borsanyi , Z. Fodor , S. D. Katz , S. Krieg , C. Ratti , K. K. Szabo