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There are strong indications that ultra-relativistic heavy ion collisions, produced in accelarators, lead to the formation of a new state of matter: the quark gluon plasma (QGP). This deconfined QCD matter is expected to exist just for very…

High Energy Physics - Phenomenology · Physics 2020-03-24 Nelson R. F. Braga , Rodrigo da Mata

The past decade has seen huge advances in experimental measurements made in heavy ion collisions at the Relativistic Heavy Ion Collider (RHIC) and more recently at the Large Hadron Collider (LHC). These new data, in combination with…

At nonzero temperature in QCD, about the deconfining phase transition there is a "semi" quark gluon plasma (semi-QGP), where the expectation value of the (renormalized) Polyakov loop is less than one. This can be modeled by a semiclassical…

High Energy Physics - Phenomenology · Physics 2010-04-28 Yoshimasa Hidaka , Robert D. Pisarski

We consider the dynamics of the scalar and pseudoscalar glueballs in the Quark-Gluon Plasma (QGP). By using the instanton model for the QCD vacuum we give the arguments that the nonperturbative gluon-gluon interaction is qualitatively…

High Energy Physics - Phenomenology · Physics 2016-05-04 Nikolai Kochelev

A proper description of the non-equilibrium matter preceding the quark-gluon plasma (QGP) in heavy-ion collisions and its observable consequences remain a major theoretical challenge, while at the same time offering new opportunities for…

High Energy Physics - Phenomenology · Physics 2025-10-07 Kirill Boguslavski

We show, through analytic arguments, numerical calculations, and comparison with experimental data, that the ratio of the high-p_T observables v_2/(1-R_AA) reaches a well-defined saturation value at high p_T, and that this ratio depends…

High Energy Physics - Phenomenology · Physics 2019-10-01 Magdalena Djordjevic , Stefan Stojku , Marko Djordjevic , Pasi Huovinen

We calculate the wake induced in a hot QCD plasma by a fast parton in the framework of linear response theory. We discuss two scenarios: ($i$) a weakly coupled quark-gluon plasma described by hard-thermal loop perturbation theory and ($ii$)…

Nuclear Theory · Physics 2007-05-23 Berndt Müller , Jörg Ruppert

The study of quark-gluon plasma (QGP) is hindered by our limited understanding of its initial conditions, particularly its longitudinal structure. We propose a novel approach that entails analyzing collisions involving nuclei of similar…

Nuclear Theory · Physics 2024-05-15 Chunjian Zhang , Shengli Huang , Jiangyong Jia

Quark-Gluon Plasma (QGP), a strongly interacting state of the early universe, exhibits remarkably fluid-like behavior despite its underlying non-Abelian dynamics. Motivated by these features, we explore time-dependent SU(2) Yang-Mills…

High Energy Physics - Theory · Physics 2026-01-01 Narasimha Reddy Gosala , Arundhati Dasgupta

A (nearly) perfect liquid discovered in the experements with ultrarelativistic heavy ion collisions is investigated by studying the quark ensembles with four-fermion interection as a fundamental theoretical approach. The comparative…

High Energy Physics - Phenomenology · Physics 2014-07-18 S. V. Molodtsov , G. M. Zinovjev

Considering the low-temperature ($T$) and high-baryon-number-density ($n_B$) region of the QCD phase diagram, we present a model for the first-order phase transition between the quark-gluon plasma (QGP) and the recently proposed colour…

High Energy Physics - Phenomenology · Physics 2009-09-25 R. S. Bhalerao , R. K. Bhaduri

The observation of collective flow phenomena in small collision systems challenges our understanding of quark-gluon plasma (QGP) formation and evolution. This complexity lies in the initial geometries, which are influenced by both nucleon…

Nuclear Experiment · Physics 2025-10-23 STAR Collaboration

Central nuclear collisions at energies far above 1 GeV/nucleon may provide for conditions, where the transition from highly excited hadronic matter into quark matter or quark-gluon plasma can be probed. Here I review our current…

Nuclear Theory · Physics 2009-10-22 Berndt Mueller

Hydrodynamical modeling of heavy ion collisions at RHIC suggests that the quark-gluon plasma (QGP) "thermalizes" in a remarkably short time scale, about 0.6 fm/c. We argue that this should be viewed as indicating fast isotropization, but…

Nuclear Theory · Physics 2010-04-06 Peter Arnold , Jonathan Lenaghan , Guy D. Moore , Laurence G. Yaffe

We study the evolution of the quark-gluon composition of the plasma created in ultra-Relativistic Heavy-Ion Collisions (uRHIC's) employing a partonic transport theory that includes both elastic and inelastic collisions plus a mean fields…

Nuclear Theory · Physics 2013-12-09 F. Scardina , M. Colonna , S. Plumari , V. Greco

Heavy flavor observables provide valuable information on the properties of the hot and dense Quark-Gluon Plasma (QGP) created in ultra-relativistic nucleus-nucleus collisions. Various microscopic models have successfully described many of…

The properties of bound states are fundamental to hadronic spectroscopy and play a central role in the transition from hadronic matter to a quark-gluon plasma (QGP). In a strongly coupled QGP (sQGP), the interplay of temperature, binding…

Nuclear Theory · Physics 2025-09-23 Zhanduo Tang , Biaogang Wu , Andrew Hanlon , Swagato Mukherjee , Peter Petreczky , Ralf Rapp

Here we comment on the thermodynamic inconsistency problem and the reformulation of statistical mechanics of widely studied quasiparticle models of quark-gluon plasma. Their starting relation, the expression for pressure itself is a wrong…

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

We derive the transport equations of quark-gluon plasma in the quasi-linear approximation. The equations are either of the Balescu-Lenard or Fokker-Planck form. The plasma's dynamics is assumed to be governed by longitudinal chromoelectric…

High Energy Physics - Phenomenology · Physics 2010-04-29 Stanislaw Mrowczynski , Berndt Muller

We review free energy evolution of QGP (Quark-gluon plasma) under zero-loop, one loop and two loop corrections in the mean field potential. The free energies of QGP under the comparison of zero-loop and loop corrections of the interacting…

High Energy Physics - Phenomenology · Physics 2020-10-20 K K Gupta , Agam K Jha , S. Somorendro Singh