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We show that the Polyakov loop approaches its asymptotic value at high temperatures {\it from below} in any strongly-coupled gauge theory at large $N_c$ with a dual supergravity description. In these theories the Polyakov loop can be used…

高能物理 - 理论 · 物理学 2014-11-20 Jorge Noronha

The correlation function between two Polyakov loops encodes the free-energy shift due to a pair of separated colour conjugated sources in the hot QCD medium. This is analyzed in terms of a novel K\"all\'en-Lehmann spectral representation…

高能物理 - 唯象学 · 物理学 2016-11-30 E. Megias , E. Ruiz Arriola , L. L. Salcedo

Polyakov loop correlations at finite temperature in two-flavor QCD are studied in lattice simulations with the RG-improved gluon action and the clover-improved Wilson quark action. From the simulations on a $16^3 \times 4$ lattice, we…

高能物理 - 格点 · 物理学 2008-11-26 Y. Maezawa , S. Ejiri , T. Hatsuda , N. Ishii , N. Ukita , S. Aoki , K. Kanaya

In the low temperature confining phase of QCD or QCD-like theories it is challenging to capture the temperature dependence of observables through AdS/CFT. Using the blackfold approach we compute the quark-antiquark linear static potential…

高能物理 - 理论 · 物理学 2015-06-23 Dimitrios Giataganas , Kevin Goldstein

We present a comprehensive study of the screening masses of vector and axial-vector mesons and their corresponding diquark partners within a symmetry-preserving vector-vector contact interaction approach. Our analysis includes mesons and…

高能物理 - 唯象学 · 物理学 2026-02-09 L. X. Gutiérrez-Guerrero , M. A. Ramírez-Garrido , M. A. Pérez de León , R. J. Hernández-Pinto

We investigate the properties of quark matter at finite density and temperature using the nonlinear chiral extension of Colour Dielectric Model (CCM). Assuming that the square of the meson fields devlop non- zero vacuum expectation value,…

核理论 · 物理学 2008-11-26 Sanjay K. Ghosh , S. C. Phatak

We explore the distribution of the energy momentum tensor (EMT) around quark--anti-quark and single quark at nonzero temperature in SU(3) Yang-Mills gauge theory by extending our previous study on the EMT distribution in static…

高能物理 - 格点 · 物理学 2019-12-11 Ryosuke Yanagihara , Takumi Iritani , Masakiyo Kitazawa , Masayuki Asakawa , Tetsuo Hatsuda

The modulation and engineering of the free-electron wave function bring new ingredients to the electron-matter interaction. We study the dynamics of a free-electron passing by a two-level system fully quantum mechanically and emphasize the…

量子物理 · 物理学 2021-11-23 Zhexin Zhao , Xiao-Qi Sun , Shanhui Fan

Confinement remains one the most interesting and challenging nonperturbative phenomenon in non-Abelian gauge theories. Recent semiclassical (for SU(2)) and lattice (for QCD) studies have suggested that confinement arises from interactions…

高能物理 - 唯象学 · 物理学 2021-09-15 Dallas DeMartini , Edward Shuryak

In a QCD-like strongly coupled gauge theory at large N_c, using the AdS/CFT correspondence, we find that heavy quark deconfinement is accompanied by a coherent condensation of higher meson resonances. This is revealed in non-equilibrium…

高能物理 - 理论 · 物理学 2015-06-11 Koji Hashimoto , Shunichiro Kinoshita , Keiju Murata , Takashi Oka

We study the baryon-quark phase transition in a molecular dynamics (MD) of quark degrees of freedom at finite temperature and density. The baryon state at low density and temperature, and the deconfined quark state at high density and…

核理论 · 物理学 2009-11-11 Yuka Akimura , Toshiki Maruyama , Naotaka Yoshinaga , Satoshi Chiba

We have performed a 3-D Monte Carlo simulation of a system composed of two identical light quarks ($qq$) and two identical antiquarks ($\bar Q\bar Q$) and determined whether it is energetically more favorable to form a tetraquark or two…

核理论 · 物理学 2016-11-23 G. Toledo Sanchez , I. A. Toledano Juarez

It has long been known that QCD undergoes a deconfining phase transition at high temperature. One of the consequent features of this new, quark-gluon phase is that hadrons become unbounded. In this talk meson correlation functions at…

高能物理 - 格点 · 物理学 2015-03-17 Gert Aarts , Chris Allton , Justin Foley , Simon Hands , Seyong Kim

We study the temperature-dependence of the shear viscosity to entropy density ratio in pure Yang-Mills theory and in QCD with light and strange quarks within kinetic theory in the relaxation time approximation. As effective degrees of…

高能物理 - 唯象学 · 物理学 2019-08-14 Valeriya Mykhaylova , Marcus Bluhm , Krzysztof Redlich , Chihiro Sasaki

This is an introduction to the use of nonperturbative flow equations in strong interaction physics at nonzero temperature and baryon density. We investigate the QCD phase diagram as a function of temperature, chemical potential for baryon…

高能物理 - 唯象学 · 物理学 2007-05-23 J. Berges

The phenomenon of the deconfinement -- the spectacular drop of the colorelectric string tension at the critical temperature $T_c$ -- is studied within the method of field correlators (FCM) taking into account directly the contribution of…

高能物理 - 唯象学 · 物理学 2023-10-03 M. S. Lukashov , Yu. A. Simonov

We investigate the properties of charmonia in a thermal medium, showing that with increasing temperature the decay widths of these mesons behave in a non-trivial way. Employing a potential model with interaction potential extracted from…

高能物理 - 唯象学 · 物理学 2010-11-02 Massimo Mannarelli , Floriana Giannuzzi

We explore various aspects of the motion of heavy quarks in strongly-coupled gauge theories, employing the AdS/CFT correspondence. Building on earlier work by Mikhailov, we study the dispersion relation and energy loss of an accelerating…

高能物理 - 理论 · 物理学 2010-02-10 Mariano Chernicoff , Alberto Guijosa

In a confining, renormalisable, Dyson-Schwinger equation model of two-flavour QCD we explore the chemical-potential dependence of the dressed-quark propagator, which provides a means of determining the behaviour of the chiral and…

核理论 · 物理学 2010-02-17 A. Bender , G. I. Poulis , C. D. Roberts , S. Schmidt , A. W. Thomas

QED is studied at low temperature ($T\ll m$, where $m$ is the electron mass) and zero chemical potential. By integrating out the electron field and the nonzero bosonic Matsubara modes, we construct an effective three-dimensional field…

高能物理 - 唯象学 · 物理学 2009-11-07 Jens O. Andersen