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I discuss briefly the instabilities of two flavor quark matter, paying attention to the gradient instability which develops in the g2SC phase in the Goldstone $U(1)_A$ sector.

High Energy Physics - Phenomenology · Physics 2008-11-26 Marco Ruggieri

By considering the non-perturbative effects associated with the fundamental modular region, a new phase of a Gluon Plasma at finite density is proposed. It corresponds to the transition from glueballs to non-perturbative gluons which…

High Energy Physics - Phenomenology · Physics 2008-11-26 Paolo Castorina , Dario Zappala'

We consider the possibility that color deconfinement and chiral symmetry restoration do not coincide in dense baryonic matter at low temperature. As a consequence, a state of massive "constituent" quarks would exist as an intermediate phase…

High Energy Physics - Phenomenology · Physics 2011-02-09 P. Castorina , R. V. Gavai , H. Satz

The self-consistent quasiparticle model has been successful in studying QCD thermodynamics. In this model, the medium effects are taken into account by considering quarks and gluons as quasiparticles with temperature-dependent masses which…

Nuclear Theory · Physics 2020-06-19 Sebastian Koothottil , Vishnu M. Bannur

A novel cooling mechanism is proposed for neutron stars, based on the recent development in the studies of the QCD phase diagram. Possible appearance of the inhomogeneous chiral phase makes the quark beta decay without gluonic interaction.…

Nuclear Theory · Physics 2015-06-19 Toshitaka Tatsumi , Takumi Muto

We investigate the possible thermodynamic instability in a warm and dense nuclear medium (T<50 MeV and \rho_0<\rho_B< 3\rho_0) where a phase transition from nucleonic matter to resonance-dominated Delta-matter can take place. The analysis…

Nuclear Theory · Physics 2012-11-09 A. Lavagno , D. Pigato

The Dirac oscillator in a homogenous magnetic field exhibits a chirality phase transition at a particular (critical) value of the magnetic field. Recently, this system has also been shown to be exactly solvable in the context of…

Statistical Mechanics · Physics 2020-04-21 Antonia M. Frassino , Dimitri Marinelli , Orlando Panella , Pinaki Roy

A phenomenological expression for the thermodynamic potential of gluons and quarks is constructed which incorporates the features of deconfinement and chiral symmetry restoration known from lattice simulations. The thermodynamic potential…

High Energy Physics - Lattice · Physics 2009-11-07 Peter N. Meisinger , Travis R. Miller , Michael C. Ogilvie

We present evidence for a spatially modulated instability within the deconfined quark-gluon plasma phase of QCD. This evidence is based on robust predictions from generic holographic models, accurately fitted to lattice data, where the…

High Energy Physics - Phenomenology · Physics 2024-05-07 Tuna Demircik , Niko Jokela , Matti Jarvinen , Aleksi Piispa

The color neutral two-flavor superconducting (2SC) phase of cold and dense quark matter is studied in the presence of constant magnetic fields and at moderate baryon densities. In the first part of the paper, a two-flavor effective…

High Energy Physics - Phenomenology · Physics 2011-08-17 Sh. Fayazbakhsh , N. Sadooghi

The ground state of dense up and down quark matter under local and global charge neutrality conditions with $\beta$-equilibrium has at least four possibilities: normal, regular 2SC, gapless 2SC phases, and mixed phase composed of 2SC phase…

High Energy Physics - Phenomenology · Physics 2007-05-23 Mei Huang , Igor Shovkovy

In this article, we study dynamic chiral symmetry breaking at zero temperature, finite chemical potential and external magnetic field with massless NJL model. We have proposed a mathematical method to classify phases in phase diagram of…

High Energy Physics - Phenomenology · Physics 2018-02-27 Song Shi , Juan Liu , Zhu-fang Cui

In connection with massless two-flavour QCD, we analyse the chiral symmetry restoring phase transition using three distinct gluon-quark vertices and two different assumptions about the long-range part of the quark-quark interaction. In each…

Nuclear Theory · Physics 2014-08-29 Fei Gao , Si-Xue Qin , Yu-Xin Liu , Craig D. Roberts , Sebastian M. Schmidt

We discuss the phase structure of quantum chromodynamics (QCD) with two colors and two flavors of light quarks. This is motivated by the increasing interest in the QCD phase diagram as follows: (1) The QCD critical point search has been…

High Energy Physics - Phenomenology · Physics 2010-06-09 Tomas Brauner , Kenji Fukushima , Yoshimasa Hidaka

We study the equation of state of quark matter at finite temperature, using a confinement model in which chiral symmetry remains broken in the deconfined phase. Implications for type II supernova explosion and for the structure and…

Astrophysics · Physics 2008-11-26 Alessandro Drago , Ubaldo Tambini

We review recent results on QCD at finite temperature. Main emphasis is put on a discussion of observables which are of immediate interest to experimental searches for the Quark Gluon Plasma, i.e. the phase transition temperature, the…

High Energy Physics - Phenomenology · Physics 2010-05-28 Frithjof Karsch

We study the phase diagram of dense, locally neutral three-flavor quark matter within the framework of the Nambu--Jona-Lasinio model. In the analysis, dynamically generated quark masses are taken into account self-consistently. The phase…

High Energy Physics - Phenomenology · Physics 2008-11-26 Stefan B. Ruester , Verena Werth , Michael Buballa , Igor A. Shovkovy , Dirk H. Rischke

We describe our recent proposal that distinct phases of gauge theories with fundamental quarks translate into specific types of low-energy behavior in Dirac spectral density. The resulting scenario is built around new evidence…

High Energy Physics - Lattice · Physics 2015-12-01 Andrei Alexandru , Ivan Horváth

We discuss lattice results on the properties of finite momentum charmonium states in a gluonic plasma. We also present preliminary results for bottomonium correlators and spectral functions in the plasma. Significant modifications of chi_b…

High Energy Physics - Lattice · Physics 2009-11-11 S. Datta , A. Jakovac , F. Karsch , P. Petreczky

A chromoelectric vacuum that confines both gluon and quark degrees of freedom (in the sense that they do not exist as asymptotic states) is constructed. However some degrees of freedom still exist as asymptotic states thereby allowing…

High Energy Physics - Phenomenology · Physics 2007-05-23 Rahul Basu , Debajyoti Choudhury