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Quarkonia are the central objects to explore the non-perturbative nature of non-abelian gauge theories. We describe the confinement-deconfinement phases for heavy quarkonia in a hot QCD medium and thereby the statistical nature of the…

High Energy Physics - Theory · Physics 2012-03-22 Stefano Bellucci , Vinod Chandra , Bhupendra Nath Tiwari

We study the hadron-quark phase transition, taking into account the finite-size effects for neutron star matter. For the hadron phase, we adopt a realistic equation of state within the framework of the Brueckner-Hartree-Fock theory. For the…

High Energy Astrophysical Phenomena · Physics 2018-07-25 Nobutoshi Yasutake , Huan Chen , Toshiki Maruyama , Toshitaka Tatsumi

The energy densities achieved during central collisions of large nuclei at Brookhaven's AGS may be high enough to allow the formation of quark--gluon plasma. Calculations based on relativistic nucleation theory suggest that rare events,…

Nuclear Theory · Physics 2009-09-25 J. I. Kapusta , R. Venugopalan , A. P. Vischer

It is shown that in ideal relativistic hydrodynamics a phase transition from hadron to quark and gluon degrees of freedom in the nuclear matter equation of state leads to a minimum in the excitation function of the transverse collective…

Nuclear Theory · Physics 2022-02-23 Dirk H. Rischke , Yaris Puersuen , Joachim A. Maruhn , Horst Stoecker , Walter Greiner

The phase diagram of quantum chromodynamics (QCD) and its associated thermodynamic properties of quark gluon plasma (QGP) are studied in the presence of time dependent magnetic field. The study plays a pivotal role in the field of…

High Energy Physics - Phenomenology · Physics 2024-02-06 Yogesh Kumar , Poonam Jain , Pargin Bangotra , Vinod Kumar , D. V. Singh , S. K. Rajouria

We investigate the equation of state of hadronic matter at finite values of baryon density and temperature reachable in high energy heavy ion collisions. The analysis is performed by requiring the Gibbs conditions on the global conservation…

Nuclear Theory · Physics 2010-05-19 A. Lavagno

The event-by-event dynamical fluctuations in kaon-to-proton and proton-to-pion ratios have been studied in dependence on center--of--mass energies of nucleon--nucleon collisions $\sqrt{s}$. Based on changing phase space volume which…

High Energy Physics - Phenomenology · Physics 2010-07-28 A. Tawfik

The constituent quark number scaling of elliptic flow is studied in a non-equilibrium hadronization and freeze-out model with rapid dynamical transition from ideal, deconfined and chirally symmetric Quark Gluon Plasma, to final…

High Energy Physics - Phenomenology · Physics 2020-12-03 Sven Zschocke , Szabolcs Horvat , Igor N. Mishustin , Laszlo P. Csernai

We present a unified approach to the thermodynamics of hadron-quark-gluon matter at finite temperatures on the basis of a quark cluster expansion in the form of a generalized Beth-Uhlenbeck approach with a generic ansatz for the hadronic…

High Energy Physics - Phenomenology · Physics 2021-03-26 D. Blaschke , Kirill A. Devyatyarov , Olaf Kaczmarek

Using combined data from the Relativistic Heavy Ion and Large Hadron Colliders, we constrain the shear and bulk viscosities of quark-gluon plasma (QGP) at temperatures of ${\sim\,}150{-}350$ MeV. We use Bayesian inference to translate…

The Generalized Uncertainty Principle (GUP), which has been predicted by various theories of quantum gravity near the Planck scale is implemented on deriving the thermodynamics of ideal Quark-Gluon Plasma (QGP) consisting of two massless…

High Energy Physics - Phenomenology · Physics 2014-10-24 I. Elmashad , A. Farag Ali , L. I. Abou-Salem , Jameel-Un Nabi , A. Tawfik

A method is developed to consistently satisfy the Gibbs equilibrium conditions between the quark-gluon and hadronic phase although each phase has been formulated in separate grand canonical partition function containing three quark…

High Energy Physics - Phenomenology · Physics 2007-05-23 A. S. Kapoyannis

The QCD transition from a hadronic to a quark-gluon plasma phase is a cross-over at vanishing/small baryo-chemical potential, while at higher chemical potentials it is argued that it becomes of first order, ending with a critical end-point.…

High Energy Physics - Phenomenology · Physics 2020-12-30 M. Motta , W. M. Alberico , A. Beraudo , P. Costa , R. Stiele

A qualitative analysis of the chiral phase transition in QCD with two massless quarks and non-zero baryon density is performed. It is assumed that at zero baryonic density, $\rho=0$, the temperature phase transition is of the second order…

High Energy Physics - Phenomenology · Physics 2007-05-23 B. L. Ioffe

The Walecka many-body field theory is investigated in the context of quantum nonextensive statistical mechanics, characterized by a dimensionless parameter $q$. We consider nuclear matter described statistically by a power-law distribution…

Nuclear Theory · Physics 2008-11-26 F. I. M. Pereira , R. SIlva , J. S. Alcaniz

Thermal shifts and fluctuations at finite temperature below the deconfinement crossover of QCD from hadronic matter to the Quark-Gluon Plasma provide a viable way to look for exotic and missing states with given quantum numbers in the…

High Energy Physics - Phenomenology · Physics 2025-01-10 Eugenio Megias , Enrique Ruiz Arriola , Lorenzo Luis Salcedo

We analyze recent results of SU(3) lattice QCD calculations with a phenomenological parametrization for the quark-gluon plasma equation of state based on a quasi-particle picture with massive quarks and gluons. At high temperature we obtain…

High Energy Physics - Phenomenology · Physics 2008-11-26 Peter Levai , Ulrich Heinz

Lattice QCD simulations have shown unequivocally that the transition from hadrons to quarks and gluons is a crossover when the baryon chemical potential is zero or small. Many model calculations predict the existence of a critical point at…

Nuclear Theory · Physics 2022-08-17 J. I. Kapusta , C. Plumberg , T. Welle

We study the phase structure and phase transition of cold dense QCD matter via the Dyson-Schwinger equation approach. We take the rainbow approximation and the Gaussian-type gluon model. In order to guarantee that the quark number density…

High Energy Physics - Phenomenology · Physics 2021-09-22 Zhan Bai , Yu-xin Liu

The chemical equilibration of a highly unsaturated quark-gluon plasma has been studied at finite baryon density. It is found that in the presence of small amount of baryon density, the chemical equilibration for gluon becomes slower and the…

High Energy Physics - Phenomenology · Physics 2009-10-31 D. Dutta , K. Kumar , A. K. Mohanty , R. K. Choudhury