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相关论文: Real time evolution of non-Gaussian cumulants in t…

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We report on recent progress in the study of the evolution of non-Gaussian cumulants of critical fluctuations. We explore the implications of non-equilibrium effects on the search for the QCD critical point.

核理论 · 物理学 2016-11-23 Swagato Mukherjee , Raju Venugopalan , Yi Yin

For the understanding of fluctuation measurements in heavy-ion collisions it is crucial to develop quantitatively reliable dynamical descriptions which take the non-perturbative nature of QCD near the phase transition into account. We…

高能物理 - 唯象学 · 物理学 2019-02-20 M. Bluhm , Y. Jiang , M. Nahrgang , J. M. Pawlowski , F. Rennecke , N. Wink

For the discovery of the QCD critical point it is crucial to develop dynamical models of the fluctuations of the net-baryon number that can be embedded in simulations of heavy-ion collisions. In this proceeding, we study the dynamical…

We consider non-equilibrium evolution of non-Gaussian fluctuations within relativistic hydrodynamics relevant for the QCD critical point search in heavy-ion collision experiments. We rely on the hierarchy of relaxation time scales, which…

高能物理 - 理论 · 物理学 2023-09-27 Xin An , Gokce Basar , Mikhail Stephanov , Ho-Ung Yee

We propose to describe the time evolution of quasi-stationary fluctuations near QCD critical point by a system of stochastic Boltzmann-Langevin-Vlasov-type equations. We derive the equations and study the system analytically in the…

高能物理 - 唯象学 · 物理学 2014-11-20 M. A. Stephanov

We study time evolution of critical fluctuations of conserved charges near the QCD critical point in the context of relativistic heavy ion collisions. A stochastic diffusion equation is employed in order to describe the diffusion property…

核理论 · 物理学 2017-06-21 Miki Sakaida , Masayuki Asakawa , Hirotsugu Fujii , Masakiyo Kitazawa

We analyze the evolution of hydrodynamic fluctuations in a heavy ion collision as the system passes close to the QCD critical point. We introduce two small dimensionless parameters $\lambda$ and $\Delta_s$ to characterize the evolution.…

核理论 · 物理学 2019-10-09 Yukinao Akamatsu , Derek Teaney , Fanglida Yan , Yi Yin

In the context of the search for the QCD critical point using non-Gaussian fluctuations, we obtain the evolution equations for non-Gaussian cumulants to the leading order of the systematic expansion in the magnitude of thermal fluctuations.…

高能物理 - 理论 · 物理学 2021-09-13 Xin An , Gokce Basar , Mikhail Stephanov , Ho-Ung Yee

We present a systematic investigation of particle number fluctuations in the crossover region near the critical endpoint of a first-order phase transition using molecular dynamics simulations of the classical Lennard-Jones fluid. We extend…

We study the effect of the QCD critical point on non-Gaussian moments (cumulants) of fluctuations of experimental observables in heavy-ion collisions. We find that these moments are very sensitive to the proximity of the critical point, as…

高能物理 - 唯象学 · 物理学 2010-04-21 M. A. Stephanov

We investigate the evolution of the net-proton kurtosis and the kurtosis of the chiral order parameter near the critical point in the model of nonequilibrium chiral fluid dynamics. The order parameter is propagated explicitly and coupled to…

高能物理 - 唯象学 · 物理学 2016-03-23 Christoph Herold , Marlene Nahrgang , Yupeng Yan , Chinorat Kobdaj

The non-Gaussian fluctuations of baryon density are sensitive to the presence of the conjectured QCD critical point. Their observational consequences are crucial for the ongoing experimental search for this critical point through the beam…

核理论 · 物理学 2022-04-13 Noriyuki Sogabe , Yi Yin

It is crucially important to find an observable which is independent on the acceptance and late collision process, in order to search for the possible Critical Point predicted by QCD. By utilizing A Multi-Phase Transport (AMPT) model and…

核理论 · 物理学 2010-08-26 Y. Zhou , S. S. Shi , K. Xiao , K. J. Wu , F. Liu

The experimental search for the QCD critical point by means of relativistic heavy-ion collisions necessitates the development of dynamical models of fluctuations. In this work we study the fluctuations of the net-baryon density near the…

核理论 · 物理学 2020-11-25 Marlene Nahrgang , Marcus Bluhm

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

We discuss the role of cumulants of net baryon number fluctuations in the analysis of critical behavior in QCD and the study of freeze-out conditions in heavy ion experiments. Through the comparison of the current set of measurements of…

高能物理 - 唯象学 · 物理学 2013-05-29 Frithjof Karsch , Krzysztof Redlich

We study the rapidity window dependences of higher order cumulants of conserved charges observed in relativistic heavy ion collisions. The time evolution and the rapidity window dependence of the non-Gaussian fluctuations are described by…

核理论 · 物理学 2015-12-09 Masakiyo Kitazawa

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…

核理论 · 物理学 2018-04-10 Marlene Nahrgang , Marcus Bluhm , Thomas Schaefer , Steffen A. Bass

With the highly anticipated results from the Beam Energy Scan II program at RHIC being recently revealed, an understanding of particle-number fluctuations and their significance as a potential signature of a possible QCD critical point is…

We study cumulants of the chiral order parameter as function of beam energy as a possible signal for the presence of a critical end point and first-order phase transition in the QCD phase diagram. We model the expansion of a heavy-ion…

高能物理 - 唯象学 · 物理学 2022-04-21 Christoph Herold , Ayut Limphirat , Poramin Saikham , Marlene Nahrgang
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