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The properties of quantum-chromo dynamics (QCD) nowadays are accessable by lattice QCD calculations at vanishing quark chemical potential $\mu_q$=0 but often lack a transparent physical interpretation. In this review we report about results…

High Energy Physics - Phenomenology · Physics 2016-05-24 Hamza Berrehrah , Elena Bratkovskaya , Thorsten Steinert , Wolfgang Cassing

We extend the effective dynamical quasiparticle model (DQPM) - constructed for the description of non-perturbative QCD phenomena of the strongly interacting quark-gluon plasma (QGP) - to large baryon chemical potentials, $\mu_B$, including…

High Energy Physics - Phenomenology · Physics 2022-03-23 Olga Soloveva , Jörg Aichelin , Elena Bratkovskaya

The quark susceptibility $\chi_q$ at zero and finite quark chemical potential provides a critical benchmark to determine the quark-gluon-plasma (QGP) degrees of freedom in relation to the results from lattice QCD (lQCD) in addition to the…

High Energy Physics - Phenomenology · Physics 2016-05-04 Hamza Berrehrah , Wolfgang Cassing , Elena Bratkovskaya , Thorsten Steinert

In this study it is demonstrated that a simple picture of the QCD gluon liquid emerges in the dynamical quasiparticle model that specifies the active degrees of freedom in the time-like sector and yields a potential energy density in the…

Nuclear Theory · Physics 2008-11-26 W. Cassing

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

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

The dilepton production by the constituents of the strongly interacting quark-gluon-plasma (sQGP) is addressed. In order to make quantitative predictions at realistically low plasma temperatures (O(T_c)), experimentally relevant low…

High Energy Physics - Phenomenology · Physics 2011-01-17 O. Linnyk

We investigate the transport properties of the strongly interacting quark-gluon plasma (sQGP) by comparing the role of elastic and inelastic (radiative) processes in the sQGP medium within the effective dynamical quasi-particle model…

High Energy Physics - Phenomenology · Physics 2025-03-04 Ilia Grishmanovskii , Taesoo Song , Olga Soloveva , Carsten Greiner , Elena Bratkovskaya

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 extend our investigation of heavy quark transport coefficients in the effective dynamical quasiparticle model (DQPM) -- which reproduces nonperturbative QCD phenomena in the strongly interacting quark-gluon plasma (sQGP) according to…

High Energy Physics - Phenomenology · Physics 2025-07-08 Ilia Grishmanovskii , Taesoo Song , Carsten Greiner , Elena Bratkovskaya

The quasi-particle model of quark gluon plasma (QGP) is revisited here with thermodynamically consistent formalism, different from earlier studies, without the need of temperature dependent bag constant as well as other effects such as…

High Energy Physics - Phenomenology · Physics 2010-10-27 Vishnu M. Bannur

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

In this study we evaluate the dynamical collisional energy loss of heavy quarks, their interaction rate as well as the different transport coefficients (drag and diffusion coefficients, $\hat{q}$, etc). We calculate these different…

High Energy Physics - Phenomenology · Physics 2014-12-15 Hamza Berrehrah , Pol-Bernard Gossiaux , Jörg Aichelin , Wolfgang Cassing , Elena Bratkovskaya

We study the heavy quark scattering on partons of the quark gluon plasma (QGP) being especially interested in the collisional (elastic) scattering processes of heavy quarks on quarks and gluons. We calculate the different cross sections for…

High Energy Physics - Phenomenology · Physics 2014-07-02 H. Berrehrah , E. Bratkovskaya , W. Cassing , P. B. Gossiaux , J. Aichelin , M. Bleicher

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

A quasiparticle model of the quark-gluon plasma is compared with lattice QCD data for purely imaginary chemical potential. Net quark number density, susceptibility as well as the deconfinement border line in the phase diagram of strongly…

High Energy Physics - Phenomenology · Physics 2008-11-26 M. Bluhm , B. Kampfer

The transport properties of the quark gluon plasma (QGP) are studied in a QCD medium at finite temperature and chemical potential. We calculate the shear viscosity $\eta(T,\mu_q)$ and the electric conductivity $\sigma_e(T,\mu_q)$ for a…

High Energy Physics - Phenomenology · Physics 2015-06-11 Hamza Berrehrah , Elena Bratkovskaya , Wolfgang Cassing , Rudy Marty

We calculate transport coefficients of the quark-gluon plasma (QGP) within the dynamical quasiparticle model (DQPM) by explicitly computing the parton interaction rates as a function of temperature $T$ and baryon chemical potential $\mu_B$…

Nuclear Theory · Physics 2020-04-22 Olga Soloveva , Pierre Moreau , Elena Bratkovskaya

A phenomenological quasiparticle model, featuring dynamically generated self-energies of excitation modes, successfully describes lattice QCD results relevant for the QCD equation of state and related quantities both at zero and non-zero…

High Energy Physics - Phenomenology · Physics 2009-11-18 M. Bluhm , B. Kampfer , K. Redlich
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