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Shear viscosity is a crucial property of QCD matter which determines the collective behavior of the the quark-gluon plasma (QGP) in ultrarelativistic heavy-ion collisions. Extending the near-equilibrium, high-precision investigations in…

High Energy Physics - Phenomenology · Physics 2021-02-03 Michael F. Wondrak , Matthias Kaminski , Marcus Bleicher

Transport calculations represent the major tool to simulate the modifications induced by the presence of a hot-deconfined medium on the production of heavy-flavour particles in high-energy nuclear collisions. After a brief description of…

High Energy Physics - Phenomenology · Physics 2021-02-03 Andrea Beraudo

Hadronic interactions are crucial for the dynamical description of heavy-ion reactions at low collision energies and in the late dilute stages at high collision energies. In particular, the properties and decay channels of resonances are an…

Nuclear Theory · Physics 2019-12-23 Vinzent Steinberg , Jan Steinheimer , Hannah Elfner , Marcus Bleicher

We construct a theoretical framework to describe the evolution of heavy flavors produced in relativistic heavy-ion collisions. The in-medium energy loss of heavy quarks is described using our modified Langevin equation that incorporates…

Nuclear Theory · Physics 2015-08-19 Shanshan Cao , Guang-You Qin , Steffen A. Bass

In peripheral heavy-ion collisions, localized ,short-lived an extremely huge magnetic field can be generated. Its possible influences on the quark-hadron phase transition(s) and the transport properties of the hadronic and partonic matter…

Nuclear Theory · Physics 2016-01-14 Abdel Nasser Tawfik

The heavy quark drag and momentum diffusion coefficients in the presence of both the collisional and radiative processes have been studied in a hot viscous QCD medium. The thermal medium effects are incorporated by employing the effective…

High Energy Physics - Phenomenology · Physics 2021-08-18 Adiba Shaikh , Manu Kurian , Santosh K. Das , Vinod Chandra , Sadhana Dash , Basanta K. Nandi

We introduce a combined macroscopic/microscopic transport approach employing relativistic hydrodynamics for the early, dense, deconfined stage of the reaction and a microscopic non-equilibrium model for the later hadronic stage where the…

Nuclear Theory · Physics 2009-11-06 S. A. Bass , A. Dumitru

Using our developed new relativistic viscous hydrodynamics code, we investigate the temperature dependence of shear and bulk viscosities from comparison with the ALICE data: single particle spectra and collective flows of Pb+Pb…

Nuclear Theory · Physics 2019-01-08 Kazuhisa Okamoto , Chiho Nonaka

We study photon production from the hidden local symmetry approach that includes pions, rho and a1 mesons and compute the corresponding photon emission rates from a hadronic gas in thermal equilibrium. Together with experimental radiative…

Nuclear Theory · Physics 2008-11-26 M. A. Halasz , J. V. Steele , G. Q. Li , G. E. Brown

We employ recently published cross sections for $D$-mesons with hadrons and calculate the drag and diffusion coefficients of $D$-mesons in hadronic matter as a function of the momentum of $D$-mesons as well as of the temperature of the…

High Energy Physics - Phenomenology · Physics 2014-08-29 Vitalii Ozvenchuk , Juan M. Torres-Rincon , Pol B. Gossiaux , Laura Tolos , Joerg Aichelin

Within the framework of a multi-phase transport model, we study the equation of state and pressure anisotropy of the hot dense matter produced in central relativistic heavy ion collisions. Both are found to depend on the hadronization…

Nuclear Theory · Physics 2008-04-29 Bin Zhang , Lie-Wen Chen , Che Ming Ko

The transport property of cold and dense nucleon matter is important for nuclear physics but is relatively less studied than that at finite temperatures. In this paper, we present a primary study of bulk and shear viscosities in the limit…

Nuclear Theory · Physics 2025-04-09 Jianing Li , Weiyao Ke

We evaluate the drag and diffusion coefficients of a hot hadronic medium consisting of pions, nucleons, kaons and eta using open charm mesons as a probe. The interaction of the probe with the hadronic matter has been treated in the…

Nuclear Theory · Physics 2015-03-19 Sabyasachi Ghosh , Santosh K Das , Sourav Sarkar , Jan-e Alam

We present recent results on bulk observables and electromagnetic probes obtained using a hybrid approach based on the Ultrarelativistic Quantum Molecular Dynamics transport model with an intermediate hydrodynamic stage for the description…

High Energy Physics - Phenomenology · Physics 2011-04-20 E. Santini , B. Bäuchle , H. Petersen , J. Steinheimer , M. Nahrgang , M. Bleicher

We discuss a relation between the QCD thermodynamics obtained from a statistical analysis of particle production in heavy ion collisions at SPS and RHIC energies and recent LGT results at finite chemical potential. We show that basic…

Nuclear Theory · Physics 2016-09-08 K. Redlich , F. Karsch , A. Tawfik

We have investigated the many-body equations of $D$ and $\bar{B}$ mesons in a thermal medium by applying an effective field theory based on chiral and heavy-quark symmetries. Exploiting these symmetries within kinetic theory, we have…

High Energy Physics - Phenomenology · Physics 2022-12-02 Juan M. Torres-Rincon

The microscopic description of heavy-ion reactions at low beam energies is achieved within hadronic transport approaches. In this article a new approach SMASH (Simulating Many Accelerated Strongly-interacting Hadrons) is introduced and…

Bayesian analyses in the context of relativistic heavy-ion collisions have so far relied almost exclusively on bulk hadronic observables constructed from momentum degrees of freedom to constrain the transport properties of the quark-gluon…

Nuclear Theory · Physics 2026-05-29 Sushant K. Singh , Eduardo Grossi , Francesco Becattini

We derive the relativistic quantum transport equation for the pion distribution function based on an effective Lagrangian of the QHD-II model. The closed time-path Green's function technique, the semi-classical, quasi-particle and Born…

Nuclear Theory · Physics 2016-08-15 Guangjun Mao , L. Neise , H. Stöcker , W. Greiner

A hadron resonance gas model including all known particles and resonances with masses $m<2$ GeV and an exponentially rising density of Hagedorn states for $m>2$ GeV is used to obtain an upper bound on the shear viscosity to entropy density…

Nuclear Theory · Physics 2009-12-03 Jacquelyn Noronha-Hostler , Jorge Noronha , Carsten Greiner