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We present a comprehensive and pedagogic discussion of the properties of photons in cold and dense nuclear matter based on the resummed one-loop photon self energy. Correlations between electrons, muons, protons and neutrons in beta…

高能天体物理现象 · 物理学 2018-04-18 Stephan Stetina , Ermal Rrapaj , Sanjay Reddy

The properties of strange ($K$, $\bar K$ and $\bar K^*$) and open-charm ($D$, $\bar D$ and $D^*$) mesons in dense matter are studied using a unitary approach in coupled channels for meson-baryon scattering. In the strangeness sector, the…

Within the framework of BCS theory and Skyrme-Hartree-Fock model, we employ various microscopic pairing gaps and effective pairing interactions to study pairing effects on the equation of state (EOS) of neutron matter and the symmetry…

核理论 · 物理学 2019-10-09 Zhen Zhang , Lie-Wen Chen

The behavior of pseudoscalar mesons in nuclear medium is reviewed with an emphasis on the possibility of their Bose-Einstein condensation in dense matter. In particular pion condensation is reexamined in detail, stimulated by recent…

核理论 · 物理学 2017-08-23 T. Tatsumi

Nuclear and neutron matters are investigated in the low density region, well below the nuclear saturation density. Microscopic calculations, based on the Bethe-Brueckner approach with a few realistic nucleon-nucleon potentials, are compared…

核理论 · 物理学 2011-07-19 M. Baldo , C. Maieron , P. Schuck , X. Vinas

We revisit the charge symmetry breaking $(CSB)$ in nucleon-nucleon $(NN)$ interaction caused by $\pi$-$\eta$ mixing in nuclear matter $(NM)$ employing one boson exchange $(OBE)$ model. The medium effect on $CSB$ is incorporated through the…

核理论 · 物理学 2019-05-17 Subhrajyoti Biswas

We study the symmetric nuclear matter using bare nucleon-nucleon ($NN$) interactions with finite particle-number approach within finite cubic boxes. Due to the $NN$ correlations originating from bare $NN$ interaction, two nucleons can be…

We show that the assumption of dropping meson masses together with conventional many-body effects, implemented in the relativistic Dirac-Brueckner formalism, explains nuclear saturation. We use a microscopic model for correlated $2\pi$…

核理论 · 物理学 2009-10-30 R. Rapp , R. Machleidt , J. W. Durso , G. E. Brown

The density and temperature dependence of nucleonic single particle spectral function in symmetric nuclear matter at finite temperatures and densities beyond normal nuclear matter density is investigated in a model emphasizing short-range…

核理论 · 物理学 2009-11-10 Frank Froemel , Horst Lenske , Ulrich Mosel

Pairing effects manifests themselves in many aspects in nuclear systems ranging from finite nuclei to nuclear matter and compact stars. Although with some specific features for nuclear systems, the mechanism of pairing between nucleons in…

核理论 · 物理学 2024-02-07 Xiang-Xiang Sun , Shan-Gui Zhou

The s-wave meson-nucleon interaction in the S=-1 sector is studied by means of a coupled-channel Lippmann Schwinger equation, using the lowest order chiral Lagrangian and a cut off to regularize the loop integrals. The position and width of…

核理论 · 物理学 2007-05-23 A. Ramos , E. Oset

The nuclear matter parameters define the nuclear equation of state (EoS), they appear as coefficients of expansion around the saturation density of symmetric and asymmetric nuclear matter. We review their correlations with several…

核理论 · 物理学 2021-05-26 B. K. Agrawal , Tuhin Malik , J. N. De , S. K. Samaddar

We discuss various aspects of pion physics in the nuclear medium. We first study s-wave pion-nucleus interaction in connection with chiral symmetry restoration and quark condensate in the nuclear medium. We then adress the question of…

核理论 · 物理学 2011-04-15 G. Chanfray

Using the relativistic mean-field model with nonlinear couplings between the isoscalar and isovector mesons, we study the properties of isospin-asymmetric nuclear matter. Not only the vector mixing,…

核理论 · 物理学 2022-04-18 Tsuyoshi Miyatsu , Myung-Ki Cheoun , Koichi Saito

The energies and widths of several D^0 meson bound states for different nuclei are obtained using a D-meson selfenergy in the nuclear medium, which is evaluated in a selfconsistent manner using techniques of unitarized coupled-channel…

核理论 · 物理学 2014-11-20 C. Garcia-Recio , J. Nieves , L. Tolos

The Dirac structure of the nucleon self-energy in symmetric nuclear matter as well as neutron matter is derived from a realistic meson exchange model for the nucleon-nucleon (NN) interaction. It is demonstrated that the effects of…

核理论 · 物理学 2016-08-15 E. Schiller , H. Müther

A detailed study is made for the nucleon-nucleon interaction based on relativistic mean field theory in which the potential is explicitly expressed in terms of mass and the coupling constant of the meson fields. A unified treatment for…

核理论 · 物理学 2015-05-20 S. K. Biswal , S. K. Singh , M. Bhuyan , S. K. Patra

The structure and density dependence of the pairing gap in infinite matter is relevant for astrophysical phenomena and provides a starting point for the discussion of pairing properties in nuclear structure. Short-range correlations can…

核理论 · 物理学 2017-10-27 A. Rios , A. Polls , W. H. Dickhoff

We review several experimental and theoretical advances that emphasise common aspects of the study of T=1 and T=0 pairing correlations in nuclei. We first discuss several empirical evidences of the special role played by the T=1 pairing…

核理论 · 物理学 2016-08-24 H. Sagawa , C. L. Bai , G. Colo'

Binary neutron star mergers provide a unique laboratory for studying matter under conditions that cannot be reproduced in terrestrial experiments. They probe dense matter at supranuclear density, finite temperature, rapid rotation, strong…

高能天体物理现象 · 物理学 2026-05-27 Armen Sedrakian