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Within the aim of a dynamical study of on- and off-shell heavy quarks Q in the quark gluon plasma (QGP) - as produced in relativistic nucleus-nucleus collisions - we study the heavy quark collisional scattering on partons of the QGP. The…

High Energy Physics - Phenomenology · Physics 2014-08-04 H. Berrehrah , E. Bratkovskaya , W. Cassing , P. B. Gossiaux , J. Aichelin

We study the kinetic and chemical equilibration in "infinite" parton matter within the parton-hadron-string dynamics off-shell transport approach, which is based on a dynamical quasiparticle model (DQPM) for partons matched to reproduce…

Nuclear Theory · Physics 2013-02-06 V. Ozvenchuk , O. Linnyk , M. I. Gorenstein , E. L. Bratkovskaya , W. Cassing

In this study, we analyze the transport properties of the Quark-Gluon Plasma, focusing on bulk ($\zeta$) and shear ($\eta$) viscosities at vanishing chemical potential. To describe the QGP, we employ a quasiparticle model for quarks along…

High Energy Physics - Phenomenology · Physics 2025-01-03 Sadaf Madni , Arghya Mukherjee , Amaresh Jaiswal , Najmul Haque

We investigate the interaction of leading jet partons within a strongly interacting quark-gluon plasma (sQGP) medium, using the effective dynamical quasiparticle model (DQPM). The DQPM offers a description of the sQGP's non-perturbative…

High Energy Physics - Phenomenology · Physics 2025-03-05 Ilia Grishmanovskii , Taesoo Song , Olga Soloveva , Carsten Greiner , Elena Bratkovskaya

We investigate the electrical conductivity of the quark-gluon plasma (QGP) using a non-perturbative resummation scheme incorporating the Gribov-modified gluon propagator. The electrical conductivity is evaluated by solving the relativistic…

High Energy Physics - Phenomenology · Physics 2026-05-07 Sadaf Madni , Sumit , Lata Thakur , Najmul Haque

In the Beam Energy Scan phase II (BES-II) experiments at RHIC STAR, the quark-gluon plasma (QGP) produced with changing collision energies may probe different regions of the QCD phase diagram. Correspondingly, studying the transport…

High Energy Physics - Phenomenology · Physics 2025-12-01 Wei-be He , Guo-yun Shao , Chong-long Xie , Ren-xin Xu

We study the extension of a phenomenologically successful quasiparticle model that describes lattice results of the equation of state of the deconfined phase of QCD for Tc <= T < 4 Tc, to finite quark chemical potential mu. The phase…

High Energy Physics - Phenomenology · Physics 2009-11-10 M. A. Thaler , R. A. Schneider , W. Weise

We study the interaction of leading jet partons in a strongly interacting quark-gluon plasma (sQGP) medium based on the effective dynamical quasi-particle model (DQPM). The DQPM describes the non-perturbative nature of the sQGP at finite…

Nuclear Theory · Physics 2025-03-05 Ilia Grishmanovskii , Taesoo Song , Olga Soloveva , Carsten Greiner , Elena Bratkovskaya

We investigate the role of inelastic processes in the strongly interacting quark-gluon plasma (sQGP) based on the effective dynamical quasi-particle model (DQPM). In the DQPM the non-perturbative properties of the sQGP at finite temperature…

High Energy Physics - Phenomenology · Physics 2025-03-03 Ilia Grishmanovskii , Olga Soloveva , Taesoo Song , Carsten Greiner , Elena Bratkovskaya

Quasi-particle model of quark gluon plasma is the statistical mechanics of particles with medium dependent mass, related to plasma frequency, which was proposed to describe the thermodynamics of the medium itself. At relativistic limit the…

High Energy Physics - Phenomenology · Physics 2008-11-26 Vishnu M. Bannur

In the last decade a Quasi-Particle Model ($QPM$) has supplied the basis for the study of HQ production in ultra-relativistic AA collisions, allowing for a phenomenological estimate of the HQ diffusion coefficient $D_s(T)$. Taking advantage…

High Energy Physics - Phenomenology · Physics 2024-04-29 Maria Lucia Sambataro , Vincenzo Greco , Gabriele Parisi , Salvatore Plumari

We test the quark mass dependence implemented in the quasiparticle dispersion relations of our quasiparticle model for the QCD equation of state by comparing with recently available lattice QCD data near $T_c$ employing almost physical…

High Energy Physics - Phenomenology · Physics 2008-07-28 M. Bluhm , B. Kampfer

The bottom quark transport coefficients, i.e., drag and diffusion coefficients, have been studied for the collisional and soft gluon radiative processes within the viscous QCD medium. The thermal medium effects are incorporated using the…

High Energy Physics - Phenomenology · Physics 2023-02-07 Adiba Shaikh , Sadhana Dash , Basanta K. Nandi

The study of transport coefficients of strongly interacting matter got impetus after the discovery of perfect fluid ever created at ultrarelativistic heavy ion collision experiments. In this article, we have calculated one such coefficient…

High Energy Physics - Phenomenology · Physics 2015-04-14 P. K. Srivastava , Lata Thakur , Binoy Krishna Patra

We propose a quasi-particle model to describe the lattice QCD equation of state for pure SU(3) gauge theory in its deconfined state, for $T \ge 1.5T_c$. The method involves mapping the interaction part of the equation of state to an…

Nuclear Theory · Physics 2009-11-05 Vinod Chandra , V. Ravishankar

Although at temperatures $T\gg \Lambda_{QCD}$ the quark-gluon plasma (QGP) is a gas of weakly interacting quasiparticles (modulo long-range magnetism), it is strongly interacting in the regime $T=(1-3) T_c$. As both heavy ion experiments…

High Energy Physics - Phenomenology · Physics 2009-11-10 Edward V. Shuryak , Ismail Zahed

According to the dynamical quasiparticle model (DQPM) -- matched to reproduce lattice QCD results in thermodynamic limit, -- the constituents of the strongly interacting quark-gluon plasma (sQGP) are massive and off-shell quasi-particles…

Nuclear Theory · Physics 2014-11-20 E. L. Bratkovskaya , O. Linnyk , W. Cassing

According to the dynamical quasiparticle model (DQPM) - matched to reproduce lattice QCD results in thermodynamic limit, - the constituents of the strongly interacting quark-gluon plasma (sQGP) are massive and off-shell quasi-particles…

Nuclear Theory · Physics 2015-05-18 O. Linnyk , E. L. Bratkovskaya , W. Cassing

The bulk and shear viscosities ($\eta$ and $\zeta$) have been studied for quark-gluon-plasma produced in relativistic heavy ion collisions within semi-classical transport theory, in a recently proposed quasi-particle model of (2+1)-flavor…

Nuclear Theory · Physics 2012-12-06 Vinod Chandra

Search for a proper and realistic equation of state (EOS) for strongly interacting matter used in the study of the QCD phase diagram still appears as a challenging problem. Recently, we constructed a hybrid model description for the quark…

High Energy Physics - Phenomenology · Physics 2013-05-20 P. K. Srivastava , C. P. Singh