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A model for determining the dimensionless spin parameter and mass of the black hole remnant of black hole-neutron star mergers with arbitrary initial black hole spin angular momentum, binary mass ratio, and neutron star mass and cold…

广义相对论与量子宇宙学 · 物理学 2014-03-11 Francesco Pannarale

In this work we investigate the effects of a non-minimally coupled quartic order scalar model on static neutron stars, with the non-minimal coupling in the Jordan frame being of the form $f(\phi ) = 1 + \xi\phi^2$. Particularly we derive…

广义相对论与量子宇宙学 · 物理学 2022-04-13 S. D. Odintsov , V. K. Oikonomou

The equation of state of asymmetric nuclear matter as well as the neutron and proton effective masses and their partial-wave and spin-isospin decomposition are analyzed within the Brueckner--Hartree--Fock approach. Theoretical uncertainties…

核理论 · 物理学 2024-04-05 Isaac Vidaña , Jérôme Margueron , Hans-Josef Schulze

A semi-microscopic self-consistent quantum approach developed recently to describe the inner crust structure of neutron stars within the Wigner-Seitz (WS) method with the explicit inclusion of neutron and proton pairing correlations is…

核理论 · 物理学 2008-11-26 M. Baldo , E. E. Saperstein , S. V. Tolokonnikov

The structure of the nuclei 206,205,204Pb is studied interms of shell model employing a realistic effective interaction derived from the Bonn A nucleon-nucleon potential. The energy spectra, binding energies and electromagnetic properties…

核理论 · 物理学 2008-11-26 L. Coraggio , A. Covello , A. Gargano , N. Itaco , T. T. S. Kuo

We explore the limits on neutrino mass which follow from a study of the long-range forces that arise from the exchange of massless or ultra-light neutrinos. Although the 2-body neutrino-exchange force is unobservably small, the many-body…

高能物理 - 唯象学 · 物理学 2009-10-28 Ephraim Fischbach

We investigated the structure of the low density regions of the inner crust of neutron stars using the Hartree-Fock-Bogoliubov (HFB) model to predict the proton content $Z$ of the nuclear clusters and, together with the lattice spacing, the…

核理论 · 物理学 2017-09-13 A. Pastore , M. Shelley , S. Baroni , C. A. Diget

In this review paper we discuss the effects of pairing correlations on inner crust matter in the density region where nuclear clusters are supposed to coexist with nonlocalised neutrons. The pairing correlations are treated in the framework…

核理论 · 物理学 2012-01-16 Jérôme Margueron , N. Sandulescu

We calculate several neutron star properties, for static and/or rotating stars, using equations of state based on different microscopic models. These include our Dirac-Brueckner-Hartree-Fock model and others derived from the…

核理论 · 物理学 2009-06-02 F. Sammarruca , Pei Liu

We analyze the observed shell gaps in N=Z nuclei determined from the binding energy differences. It is found that the shell gaps can be described by the combined contributions from the single-particle level spacing, the like-nucleon…

核理论 · 物理学 2009-03-04 Kazunari Kaneko , Jing-ye Zhang , Yang Sun

A realistic nuclear mean-field hamiltonian with pairing has been diagonalized using Fock space representation that allows for nearly exact treatment of the problem. Calculations were performed for all the even-even nuclei with Z in (20,…

核理论 · 物理学 2007-05-23 J. Dudek , K. Mazurek , B. Nerlo-Pomorska

We use a recently developed model of relativistic meson-exchange currents to compute the neutron-proton and proton-proton yields in $(\nu_\mu,\mu^-)$ scattering from $^{12}$C in the 2p-2h channel. We compute the response functions and cross…

We revisit the emissivity from neutrino pair bremsstrahlung in neutron-neutron scattering, nn -> nn nu nubar, which was calculated from the one-pion exchange potential including correlation effects by Friman and Maxwell. Starting from the…

核理论 · 物理学 2009-11-10 A. Schwenk , P. Jaikumar , C. Gale

We perform three-dimensional hydrodynamical simulations of the coalescence of binary neutron stars. We include the emission and backreaction of gravitational waves into the Newtonian ``Piecewise Parabolic Method''. The use of the physical…

天体物理学 · 物理学 2011-05-23 H. -Th. Janka , M. Ruffert

Two particle correlations are used to extract information about the characteristic size of the system in proton-proton and heavy ion collisions. The size of the system can be extracted from the Bose-Einstein quantum mechanical effect for…

高能物理 - 实验 · 物理学 2011-01-28 Nicolas Bock

The neutron-proton effective mass splitting in neutron-rich nucleonic matter reflects the space-time nonlocality of the isovector nuclear interaction. It affects the neutron/proton ratio during the earlier evolution of the Universe, cooling…

核理论 · 物理学 2015-04-14 Bao-An Li , Lie-Wen Chen

We calculate the neutrino energy emission rate due to singlet-state pairing of protons in the neutron star cores taking into account the relativistic correction to the non-relativistic rate. The non-relativistic rate is numerically small,…

天体物理学 · 物理学 2011-05-23 A. D. Kaminker , P. Haensel , D. G. Yakovlev

The energy dependence is investigated for a wide set of space-time characteristics derived from Bose - Einstein correlations of secondary pion pairs produced in proton-proton and nucleus-nucleus interactions. Analytic functions suggested…

高能物理 - 唯象学 · 物理学 2016-12-07 V. A. Okorokov

We present an overview of microscopical calculations of the Equation of State (EOS) of neutron matter performed using Quantum Monte Carlo techniques. We focus to the role of the model of the three-neutron force in the high-density part of…

核理论 · 物理学 2015-06-11 Stefano Gandolfi

We develop a unified model of hadrons and quarks. Within this approach we investigate the phase structure of the model as function of temperature and chemical potential. Computing the equation of state of cold matter we determine neutron…

核理论 · 物理学 2015-05-27 S. Schramm , V. Dexheimer , R. Negreiros , T. Schürhoff
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