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We derive the analogue of the QCD low energy theorems for the scalar and pseudoscalar gluonic correlators in nuclear matter. We find that the scalar correlations are depleted while the pseudoscalar correlations are enhanced to leading order…

核理论 · 物理学 2009-11-06 Su Houng Lee , Ismail Zahed

A general relativistic model of an astrophysical hypermassive extremely magnetized ultra-compact self-bound quark--gluon plasma object that is supported against its ultimate gravitational implosion by the simultaneous action of the vacuum…

The strongly-coupled phase of the quark-gluon plasma (QGP) is studied here by resorting to a $T$-matrix formulation in which the medium is seen as a non-ideal gas of quasiparticles (quarks, antiquarks and gluons) interacting…

高能物理 - 唯象学 · 物理学 2015-07-01 Gwendolyn Lacroix , Claude Semay , Fabien Buisseret

We study the dynamics of a charged particle in the field of a slowly rotating compact star in the gravitoelectromagnetic approximation to the geodesic equation . The star is assumed to be surrounded by an ideal, highly conducting plasma…

天体物理学 · 物理学 2009-11-10 Babur M. Mirza

A unified chiral mean field approach is presented for QCD thermodynamics in a wide range of temperatures and densities. The model simultaneously gives a satisfactory description of lattice QCD thermodynamics and fulfills nuclear matter and…

高能物理 - 唯象学 · 物理学 2019-02-20 Anton Motornenko , Volodymyr Vovchenko , Jan Steinheimer , Stefan Schramm , Horst Stoecker

We present a new model of large-scale multilayer convection in solar type stars. This model allows us to understand such self-similar structures observed at solar surface as granulation, supergranulation and giant cells. We study the…

太阳与恒星天体物理 · 物理学 2010-12-17 E. A. Bruevich , I. K. Rozgacheva

We propose two models for constant density relativistic perfect-fluid spheres supported by thin shell configurations. These models are obtained from the Schwarzschild constant density star solution: the first via the collapse of the…

广义相对论与量子宇宙学 · 物理学 2020-09-16 João Luís Rosa , Pedro Piçarra

Interested in the collapse of a radiating star, we study the temporal evolution of a fluid with heat flux and bulk viscosity, including anisotropic pressure. As a starting point, we adopt an initial configuration that satisfies the…

广义相对论与量子宇宙学 · 物理学 2018-11-27 L. S. M. Veneroni , M. F. A. da Silva

The Relativistic Heavy Ion Collider (RHIC) was built to re-create and study in the laboratory the extremely hot and dense matter that filled our entire universe during its first few microseconds. Its operation since June 2000 has been…

核理论 · 物理学 2009-10-09 Ulrich W. Heinz

The recent detection of gravitational waves from merging neutron star events has opened a new window on the many unknown aspects of their internal dynamics. A key role in this context is played by the transition from baryon to quark matter…

高能物理 - 唯象学 · 物理学 2019-10-08 Abha Rajan , Tyler Gorda , Simonetta Liuti , Kent Yagi

We propose a new doorway to study the interplay between equations of state of dense matter and compact stars in gauge/gravity correspondence. For this we construct a bulk geometry near the boundary of five-dimensional spacetime. By solving…

高能物理 - 唯象学 · 物理学 2015-06-05 Kyung Kiu Kim , Youngman Kim , Ik Jae Shin

The very high energy gamma-ray emissions from pulsars are usually considered to be dominated by leptonic scenario since the hadronic flux is weak. We point out that the gluon condensation predicted by a nonlinear QCD evolution equation may…

高能天体物理现象 · 物理学 2021-09-08 J. H. Ruan , Z. C. Zheng , W. Zhu

The shape of the neutrino pulse from the supernova SN1987a provides one of the most stringent constraints on the size of large, compact, "gravity-only" extra dimensions. Previously, calculations have been carried out for a newly-born…

核理论 · 物理学 2009-11-07 Daniel Arndt

The gravitational waves emitted from a binary neutron star merger, as predicted from general relativistic magneto-hydrodynamics calculations, are sensitive to the appearance of quark matter and the stiffness of the equation of state of QCD…

高能物理 - 唯象学 · 物理学 2019-07-16 Anton Motornenko , Jan Steinheimer , Volodymyr Vovchenko , Stefan Schramm , Horst Stoecker

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…

高能物理 - 唯象学 · 物理学 2024-05-07 Tuna Demircik , Niko Jokela , Matti Jarvinen , Aleksi Piispa

We investigate the formation of spherical cosmological structures following both dark matter and gas components. We focus on the dynamical aspect of the collapse assuming an adiabatic, $\gamma = 5/3$, fully ionized primordial plasma. We use…

天体物理学 · 物理学 2009-10-30 Jean-Pierre CHIEZE , Romain Teyssier , Jean-Michel Alimi

We study the phase diagram of (large-$N_c$) QCD using a simplistic holographic hard-wall model with a dynamical scalar field and a homogeneous Ansatz representing a smeared instanton/baryon density. The resulting phase diagram is…

高能物理 - 理论 · 物理学 2022-06-22 Lorenzo Bartolini , Sven Bjarke Gudnason , Josef Leutgeb , Anton Rebhan

Heavy ion collisions quickly form a droplet of quark-gluon plasma (QGP) with a remarkably small viscosity. We give an accessible introduction to how to study this smallest and hottest droplet of liquid made on earth and why it is so…

高能物理 - 唯象学 · 物理学 2018-11-14 Wit Busza , Krishna Rajagopal , Wilke van der Schee

We present the results of a numerical simulation in which star formation proceeds from an initially unbound molecular cloud core. The turbulent motions, which dominate the dynamics, dissipate in shocks leaving a quiescent region which…

天体物理学 · 物理学 2009-11-10 Paul C. Clark , Ian A. Bonnell

The properties of matter at finite baryon densities play an important role for the astrophysics of compact stars as well as for heavy ion collisions or the description of nuclear matter. Because of the sign problem of the quark determinant,…

高能物理 - 格点 · 物理学 2017-04-05 Owe Philipsen