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We present a hydrodynamic theory describing pair diffusion in systems with periodic boundary conditions, thereby generalizing earlier work on self-diffusion [D\"unweg and Kremer, J. Chem. Phys. 1993, 99, 6983-6997; Yeh and Hummer, J. Phys.…

软凝聚态物质 · 物理学 2023-05-03 Diddo Diddens , Andreas Heuer

The dynamic electron-ion collisions play an important rolein determining the static and transport properties of warmdense matter (WDM). Electron force field (eFF) method is applied to study the ionic transport properties of warm…

计算物理 · 物理学 2021-01-15 Yunpeng Yao , Qiyu Zeng , Ke Chen , Dongdong Kang , Yong Hou , Qian Ma , Jiayu Dai

The microscopic transport model UrQMD and a micro+macro hybrid model are used to calculate direct photon spectra from U+U-collisions at Elab = 35 AGeV as will be measured by the CBM-collaboration at FAIR. In the hybrid model, the…

核理论 · 物理学 2011-01-04 Bjoern Baeuchle , Marcus Bleicher

Coupling hadronic kinetic theory models to fluid dynamics in phenomenological studies of heavy ion collisions requires a prescription for ``particlization''. Existing particlization models are based on implicit or explicit assumptions about…

高能物理 - 唯象学 · 物理学 2021-06-16 Derek Everett , Chandrodoy Chattopadhyay , Ulrich Heinz

We review integrated dynamical approaches to describe heavy ion reaction as a whole at ultrarelativistic energies. Since final observables result from all the history of the reaction, it is important to describe all the stages of the…

核理论 · 物理学 2015-06-04 Tetsufumi Hirano , Pasi Huovinen , Koichi Murase , Yasushi Nara

Using a (3+1)-dimensional hybrid framework with parametric initial conditions, we study the rapidity-dependent directed flow $v_1(y)$ of identified particles, including pions, kaons, protons, and lambdas in heavy-ion collisions. Cases…

核理论 · 物理学 2024-05-09 Lipei Du , Chun Shen , Sangyong Jeon , Charles Gale

We review progress in the hydrodynamic description of heavy-ion collisions, focusing on recent developments in modeling the fluctuating initial state and event-by-event viscous hydrodynamic simulations. We discuss how hydrodynamics can be…

核理论 · 物理学 2015-06-12 Charles Gale , Sangyong Jeon , Bjoern Schenke

The early dynamics in heavy-ion collisions involves a rapid, far from equilibrium evolution. This early pre-equilibrium stage of the dynamics can be modeled using kinetic equations. The effect of this pre-equilibrium stage on final…

核理论 · 物理学 2023-04-05 Piotr Bozek

We present a new event generator based on the three-fluid hydrodynamics approach for the early stage of the collision, followed by a particlization at the hydrodynamic decoupling surface to join to a microscopic transport model, UrQMD, to…

To describe ultrarelativistic heavy-ion collisions we construct a three-fluid hydrodynamical model. In contrast to one-fluid hydrodynamics, it accounts for the finite stopping power of nuclear matter, i.e. for nonequilibrium effects in the…

核理论 · 物理学 2016-09-08 J. Brachmann , A. Dumitru , J. A. Maruhn , H. Stöcker , W. Greiner , D. H. Rischke

Simulations of relativistic heavy-ion collisions within the three-fluid model employing a purely hadronic equation of state (EoS) and two versions of the EoS involving deconfinement transition are presented. The latter are an EoS with the…

核理论 · 物理学 2014-01-23 Yu. B. Ivanov

The collective motion of nucleons from high-energy heavy-ion collisions is analyzed within a relativistic two-fluid model for different equations of state (EoS). As function of beam energy the theoretical slope parameter F_y of the…

核理论 · 物理学 2014-11-18 Yu. B. Ivanov , E. G. Nikonov , W. Noerenberg , A. A. Shanenko , V. D. Toneev

Fluid dynamic approach is a workhorse for modelling collective dynamics in relativistic heavy-ion collisions. The approach has been successful in describing various features of the momentum distributions of hadrons produced in the heavy-ion…

核理论 · 物理学 2021-08-04 Iurii Karpenko

We propose that the transverse momentum ($p_T$) differential splitting of directed flow ($\Delta v_1$) between proton and anti-proton can serve as a sensitive observable to extract the baryon diffusion coefficient ($\kappa_B$) of the hot…

核理论 · 物理学 2023-05-18 Tribhuban Parida , Sandeep Chatterjee

In the double-cone ignition (DCI) inertial confinement fusion scheme, head-on collision of high density plasma jets is one of the most distinguished feature when compared with other schemes. However, the application of traditional…

等离子体物理 · 物理学 2023-08-02 D. Wu , J. Zhang

Direct photon emission in heavy-ion collisions is calculated within a relativistic micro+macro hybrid model and compared to the microscopic transport model UrQMD. In the hybrid approach, the high-density part of the collision is calculated…

核理论 · 物理学 2011-11-10 Bjoern Baeuchle , Marcus Bleicher

We construct a model for baryon diffusion which has the desired properties of analyticity and causality. The model also has the desired property that the noise correlation function is not a Dirac delta function in space and time. The model…

核理论 · 物理学 2017-01-31 J. I. Kapusta , C. Young

Some isospin dynamics results in heavy ion collisions from low to relativistic energies obtained through transport approaches, largely inspired by David M.Brink, are reviewed. At very low energies, just above the Coulomb barrier, the…

核理论 · 物理学 2007-05-23 M. Di Toro

The transport coefficients are known as the measure of system interactions, as well as the dynamical input of the hydrodynamic evolution equations of an expanding system created in the relativistic heavy ion collisions. In the current…

核理论 · 物理学 2025-08-25 Sukanya Mitra

Combining the hydrodynamic model (Hydro code) and the transport model (PACIAE model), we present the Hydro-PACIAE hybrid model. We use the Hydro-PACIAE hybrid model to calculate Au+Au collisions at $\sqrt{s_{NN}}$=130 GeV and Pb+Pb…

核理论 · 物理学 2015-06-03 Yu-Liang Yan , Yun Cheng , Dai-Mei Zhou , Bao-Guo Dong , Xu Cai , Ben-Hao Sa , Laszlo P. Csernai