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Recent results for the photoproduction of mesons off nuclei are reviewed. These experiments have been performed for two major lines of research related to the properties of the strong interaction. The investigation of nucleon resonances…

核实验 · 物理学 2011-10-04 B. Krusche

The finite temperature and finite density dependence of the neutron-proton mass difference is analysed in a purely hadronic framework where the $\rho-\omega $ mixing is crucial for this isospin symmetry breakdown. The problem is handled…

高能物理 - 唯象学 · 物理学 2016-08-15 H. R. Christiansen , L. N. Epele , H. Fanchiotti , C. A. García Canal

We explore the thermodynamic properties of homogeneous cold (zero-temperature) nuclear matter including nucleons and $\alpha$-particle condensation at low densities by using a generalized nonlinear relativistic mean-field (gNL-RMF) model.…

核理论 · 物理学 2019-11-13 Zhao-Wen Zhang , Lie-Wen Chen

Using phenomenological equations of state, we study the chemical and mechanical instabilities in hot isospin-asymmetric nuclear matter. Both instabilities are found to depend strongly on the isospin asymmetry of the nuclear matter. For a…

核理论 · 物理学 2009-10-30 Bao-An Li , C. M. Ko

We explore the relation between proton and nucleon number fluctuations in the final state in relativistic heavy ion collisions. It is shown that the correlations between the isospins of nucleons in the final state are almost negligible over…

核理论 · 物理学 2015-06-05 Masakiyo Kitazawa , Masayuki Asakawa

The properties of compact stars and their formation processes depend on many physical ingredients. The composition and the thermodynamics of the involved matter is one of them. We will investigate here uniform strongly interacting matter at…

核理论 · 物理学 2016-04-20 M. Oertel , F. Gulminelli , C. Providencia , A. R. Raduta

We exhibit the existence of stable, saturated nuclear matter in the large $N_{c}$ and heavy quark mass limits of QCD. In this limit, baryons (with the same spin flavor structure) interact at leading order in $N_{c}$ via a repulsive…

核理论 · 物理学 2014-06-11 Prabal Adhikari , Thomas D. Cohen , Ishaun Datta

We study the holographic light meson spectra and their mass splitting in the nuclear medium. In order to describe the nuclear matter, we take into account the thermal charged AdS geometry with two flavor charges, which can be reinterpreted…

高能物理 - 理论 · 物理学 2015-06-16 Bum-Hoon Lee , Shahin Mamedov , Siyoung Nam , Chanyong Park

We study the properties of X-ray galaxy clusters in four cold dark matter models with different baryon fraction $\Omega_{BM}$ ranging from 5 to 20 per cent. By using an original three-dimensional hydrodynamic code based on the piecewise…

天体物理学 · 物理学 2009-10-30 Claudio Gheller , Ornella Pantano , Lauro Moscardini

The likely presence of $\Lambda$ baryons in dense hadronic matter tends to soften the equation of state to an extend that the observed heaviest neutron stars are difficult to explain. We analyze this "hyperon problem" with a…

核理论 · 物理学 2015-08-26 Paulo F. Bedaque , Andrew W. Steiner

We explore the mass splitting of the heavy-light mesons with chiral partner structure in nuclear matter. In our calculation, we employed the heavy hadron chiral perturbation theory with chiral partner structure and the nuclear matter is…

高能物理 - 唯象学 · 物理学 2015-03-05 Daiki Suenaga , Bing-Ran He , Yong-Liang Ma , Masayasu Harada

The fundamental description of both structural properties and reactions of light nuclei in terms of constituent protons and neutrons interacting through nucleon-nucleon and three-nucleon forces is a long-sought goal of nuclear theory. I…

The formation of $\alpha$-particle clusters on the surface of heavy nuclei is described in a generalized relativistic mean-field model with explicit cluster degrees of freedom. The effects on the size of the neutron skin of Sn nuclei and…

核理论 · 物理学 2015-06-19 Stefan Typel

We combine ASCA and ROSAT X-ray data to constrain the radial dark matter distribution in the primary cluster of A2256, free from the isothermality assumption. Both instruments indicate that the temperature declines with radius. The region…

天体物理学 · 物理学 2009-10-30 M. Markevitch , A. Vikhlinin

We investigate the liquid-gas phase transition of hot protoneutron stars shortly after their birth following supernova explosion and the composition and structure of hyperon-rich (proto)neutron stars within a relativistic mean-field model…

核理论 · 物理学 2010-12-02 Bharat K. Sharma , Subrata Pal

We discuss the structure of clusters in a class of flat cosmological models with the fraction of mass \Omega_{CDM} ~0.8 in cold dark matter, and the rest in hot dark matter in the form of massive neutrinos. We consider such Cold+Hot Dark…

天体物理学 · 物理学 2009-10-28 Lev Kofman , Anatoly Klypin , Dmitri Pogosyan , J. Patrick Henry

High energy heavy-ion collisions are proposed as a novel means to constrain stringently the high density (HD) behaviour of nuclear symmetry energy. Within an isospin-dependent hadronic transport model, it is shown for the first time that…

核理论 · 物理学 2011-05-05 Bao-An Li

An accurate description of low-density nuclear matter is crucial for explaining the physics of neutron star crusts. In the density range between approximately 0.01 fm$^{-3}$ and 0.1 fm$^{-3}$, matter transitions from neutron-rich nuclei to…

核理论 · 物理学 2024-08-01 Bryce Fore , Jane Kim , Morten Hjorth-Jensen , Alessandro Lovato

The importance of studying matter at high $\rho$ increases as more astrophysical data becomes available from recently launched spacecrafts. The importance of high T studies derives from heavy ion data. In this paper we set up a formalism to…

核理论 · 物理学 2016-09-08 Rinaldo Cenni , Jishnu Dey , Mira Dey

We study pion--nucleon scattering with a chiral lagrangian of pions, nucleons, and $\Delta$-isobars to order $Q^3$, where $Q$ is a generic small momentum. We compare the results from heavy baryon chiral perturbation theory with those from…

核理论 · 物理学 2009-11-07 Kenichi Torikoshi , Paul J. Ellis