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The Randall-Sundrum model of warped geometry in a five-dimensional scenario, aimed at explaining the hierarchy between the Planck and electroweak scales, is intrinsically unstable in its minimal form due to negative tension of the visible…

高能物理 - 唯象学 · 物理学 2009-11-06 Paramita Dey , Biswarup Mukhopadhyaya , Soumitra SenGupta

To improve the constraints of symmetry energy at subsaturation density, measuring and accumulating more neutron skin data for neutron rich unstable nuclei is naturally required. Aiming to probe the neutron skin of unstable nuclei by using…

核理论 · 物理学 2023-04-25 Junping Yang , Xiang Chen , Ying Cui , Zhuxia Li , Yingxun Zhang

Novel simple properties of the monopole component of the effective nucleon-nucleon interaction are presented, leading to the so-called monopole-based universal interaction. Shell structures are shown to change as functions of $N$ and $Z$…

We employ Relativistic Mean Field (RMF) model with NL3 parametrization to investigate the ground state properties of superheavy nucleus, Z = 124. The nuclei selected (from among complete isotopic series) for detailed investigation show that…

核理论 · 物理学 2015-10-29 M. S. Mehta , Harvinder Kaur , Bharat Kumar , S. K. Patra

The filamentation instability (sometimes also referred to as "Weibel") is a key process in many astrophysical scenario. In the Fireball model for Gamma Ray Bursts, this instability is believed to mediate collisionless shock formation from…

高能天体物理现象 · 物理学 2015-05-28 Antoine Bret , Erica Perez Alvaro

This paper compiles the model parameters and zero-temperature properties of an extensive collection of published theoretical nuclear interactions, including 255 non-relativistic (Skyrme-like) forces, 270 relativistic mean field (RMF) and…

核理论 · 物理学 2024-05-07 Boyang Sun , Saketh Bhattiprolu , James M. Lattimer

Self-consistent mean field methods based on phenomenological Skyrme effective interactions are known to exhibit spurious spin and spin-isospin instabilities both at zero and finite temperatures when applied to homogeneous nuclear matter at…

核理论 · 物理学 2010-11-03 N. Chamel , S. Goriely

Weak-interaction-mediated chiral imbalance generation in idealized massless electrons during core-collapse supernovae was once proposed to be the source of strong magnetic fields found in neutron stars. The effect goes by the name of chiral…

高能天体物理现象 · 物理学 2026-03-06 Steven P. Harris , Srimoyee Sen

Based on an extended nuclear statistical equilibrium model, we investigate the properties of non-accreted crusts of young and warm neo-neutron stars, i.e., of finite-temperature inhomogeneous dense matter in beta equilibrium. An interesting…

核理论 · 物理学 2025-11-10 Mikhail V. Beznogov , Adriana R. Raduta

We have made a detailed study of the ground-state properties of nuclei in the light mass region with atomic numbers Z=10-22 in the framework of the relativistic mean-field (RMF) theory. The nonlinear $\sigma\omega$ model with scalar…

核理论 · 物理学 2009-10-30 G. A. Lalazissis , A. R. Farhan , M. M. Sharma

The continuity equation requires that energy released in nuclear fusion flows away from the point of interaction and is not immediately thermalised into the CMB. It is seen that consequently the bulk of thermo-nuclear energy released in BBN…

综合物理 · 物理学 2019-08-20 Charles Francis

We present a short overview of our recent theoretical developments aiming at the description of exotic nuclear phenomena to be reached and studied at the next-generation radioactive beam facilities. Applications to nuclear shell structure…

核理论 · 物理学 2013-08-15 E. Litvinova , B. A. Brown , D. -L. Fang , T. Marketin , P. Ring , V. I. Tselyaev , R. G. T. Zegers

Neutron stars are the densest objects in the Universe. In this paper we consider so-called inner crust - the layer, where neutron-excess nuclei are immersed into degenerate gas of electrons and sea of quasi-free neutrons. It was generally…

核理论 · 物理学 2022-09-14 Nikita A. Zemlyakov , Andrey I. Chugunov

Various ground state properties are explored for full isotonic(isotopic) chain of neutron number N(proton number Z)$=$40 using different families of Relativistic Mean-Field theory. Several properties such as nucleon separation energies,…

核理论 · 物理学 2021-08-04 R. Sharma , A. Jain , M. Kaushik , S. K. Jain , G. Saxena

In this work, a shell model for metal clusters up to 220 valence electrons is used to obtain the fractional occupation probabilities of the electronic orbitals. Then, the calculation of a statistical measure of complexity and the…

原子与分子团簇 · 物理学 2010-02-05 Jaime Sanudo , Ricardo Lopez-Ruiz

We establish the dynamical instability of a static, spherically symmetric, and infinitesimally thin shell in general relativity. The shell is made up of a perfect fluid with a barotropic equation of state, and it produces a Schwarzschild…

广义相对论与量子宇宙学 · 物理学 2026-04-08 Tristan Pitre , Berend Schneider , Eric Poisson

A remarkable fact about spherically-symmetric neutron stars in hydrostatic equilibrium - the so-called Schwarzschild stars - is that the only physics that they are sensitive to is the equation of state of neutron-rich matter. As such,…

核理论 · 物理学 2008-02-28 J. Piekarewicz

In this paper we propose a notion of stability, that we call $\epsilon -N$-stability, for systems of particles interacting via Newton's gravitational potential, and orbiting a much bigger object. For these systems the usual thermodynamical…

数学物理 · 物理学 2022-04-11 Gabriella Pinzari , Benedetto Scoppola , Alessio Troiani

In this work, we identify a unique and novel feature of central density depletion in both proton and neutron named as doubly bubble nuclei in 50$\leq$Z(N)$\leq$82 region. The major role of 2d-3s single-particle (s.p.) states in the…

核理论 · 物理学 2020-10-20 M. Kumawat , G. Saxena , M. Kaushik , S. K. Jain , J. K. Deegwal , Mamta Aggarwal

A perturbing shell is introduced as a device for studying the excitation of fluid motions in relativistic stellar models. We show that this approach allows a reasonably clean separation of radiation from the shell and from fluid motions in…

广义相对论与量子宇宙学 · 物理学 2009-10-31 Zeferino Andrade , Richard H. Price
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