English
Related papers

Related papers: Neutron stars and the fermionic Casimir effect

200 papers

The interaction between nuclei in the inner crust of neutron stars consists of two contributions, the so-called "direct" interaction and an "induced" one due to density changes in the neutron fluid. For large nuclear separations $r$ the…

Nuclear Theory · Physics 2017-03-02 D. Kobyakov , C. J. Pethick

The potential role of a cosmic vacuum dark component in the properties of neutron stars is investigated. It is assumed that the static, spherically symmetric distribution of matter within neutron stars is supported by two distinct…

High Energy Physics - Phenomenology · Physics 2024-08-05 L. F. Araujo , J. A. S. Lima , G. Lugones

The bottom part of the neutron star crust is investigated using the Skyrme-Hartree-Fock approach with the Coulomb interaction treated beyond the Wigner-Seitz approximation. A variety of nuclear phases is found to coexist in this region.…

Nuclear Theory · Physics 2009-11-07 Piotr Magierski , Aurel Bulgac , Paul-Henri Heenen

The detailed knowledge of the inner crust properties of neutron stars might be important to explain different phenomena such as pulsar glitches or the possibility of an {\it r-process} site in neutron star mergers. It has been shown in the…

Nuclear Theory · Physics 2020-09-21 C. Mondal , X. Viñas , M. Centelles , J. N. De

The inner crust of a mature neutron star is composed of an elastic lattice of neutron-rich nuclei penetrated by free neutrons. These neutrons can flow relative to the crust once the star cools below the superfluid transition temperature. In…

General Relativity and Quantum Cosmology · Physics 2019-05-22 N. Andersson , B. Haskell , G. L. Comer , L. Samuelsson

The structure of the crust of a neutron star is completely determined by the experimentally measured nuclear masses up to a density of the order of 10^11 g.cm^{-3}. At higher densities, the composition of the crust still remains uncertain,…

Nuclear Theory · Physics 2008-11-26 Nicolas Chamel

We study the linear response of the inner crust of neutron stars within the Random Phase Approximation, employing a Skyrme-type interaction as effective interaction. We adopt the Wigner-Seitz approximation, and consider a single unit cell…

Nuclear Theory · Physics 2015-03-13 S. Baroni , A. Pastore , F. Raimondi , F. Barranco , R. A. Broglia , E. Vigezzi

We discuss the ground state properties of matter in outer and inner crusts of neutron stars under the influence of strong magnetic fields. In particular, we demonstrate the effects of Landau quantization of electrons on compositions of…

High Energy Astrophysical Phenomena · Physics 2015-06-12 Rana Nandi , Debades Bandyopadhyay

The inner layers of a neutron star crust, composed of a Coulomb lattice of neutron rich nuclear clusters immersed in a sea of ``free'' superfluid neutrons, are closely analogous to periodic condensed matter systems such as electronic,…

Nuclear Theory · Physics 2008-11-26 Nicolas Chamel

The inner crust of a neutron star is a superfluid and inhomogeneous system, consisting of a lattice of nuclei immersed in a sea of neutrons. We perform a quantum calculation of the associated pairing gap and compare it to the results one…

Nuclear Theory · Physics 2009-09-25 F. Barranco , R. A. Broglia , H. Esbensen , E. Vigezzi

Superfluid dilute neutron matter and ultracold gas, close to the unitary regime, exhibit several similarities. Therefore, to a certain extent, fermionic ultracold gases may serve as emulators of dilute neutron matter, which forms the inner…

We study, within a quantum mechanical framework based on self-consistent mean field theory, the interaction between a vortex and a nucleus immersed in a sea of free neutrons, a scenario representative of the inner crust of neutron stars.…

Nuclear Theory · Physics 2008-11-26 P. Avogadro , F. Barranco , R. A. Broglia , E. Vigezzi

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…

Nuclear Theory · Physics 2025-11-10 Mikhail V. Beznogov , Adriana R. Raduta

A simple description of superfluid hydrodynamics in the inner crust of a neutron star is given. Particular attention is paid to the effect of the lattice of nuclei on the properties of the superfluid neutrons, and the effects of…

Solar and Stellar Astrophysics · Physics 2015-05-19 C. J. Pethick , N. Chamel , S. Reddy

The composition of the inner crust of neutron stars is usually studied using phenomenological interactions such as Skyrme energy-density functionals. But most of these functionals do not agree well with ab-initio calculations of very dilute…

Nuclear Theory · Physics 2024-04-10 Sunny Kumar Gupta , Michael Urban

We study the role the proton-electron gas interaction has on the formation of nuclear structures in neutron star crusts. Using a classical molecular dynamics model we study isospin symmetric and asymmetric matter at subsaturation densities…

Nuclear Theory · Physics 2012-08-24 C. O. Dorso , P. A. Giménez Molinelli , J. A. López , E. Ramírez-Homs

Now 50 years since the existence of the neutron star crust was proposed, we review the current understanding of the nuclear physics of the outer layers of accreting neutron stars. Nuclei produced during nuclear burning replace the nascent…

High Energy Astrophysical Phenomena · Physics 2018-08-09 Zach Meisel , Alex Deibel , Laurens Keek , Peter Shternin , Justin Elfritz

Superfluid properties of the inner crust matter of neutron stars, formed by nuclear clusters immersed in a dilute neutron gas, are analysed in a self- consistent HFB approach. The calculations are performed with two pairing forces, fixed so…

Nuclear Theory · Physics 2009-11-10 N. Sandulescu , Nguyen Van Giai , R. J. Liotta

Background: The inner crust of a neutron star is believed to consist of Coulomb-frustrated complex structures known as "nuclear pasta" that display interesting and unique low-energy dynamics. Purpose: To elucidate the structure and…

Nuclear Theory · Physics 2015-06-12 K. H. O. Hasnaoui , J. Piekarewicz

The structure and composition of the inner crust of neutron stars, as well as global stellar properties such as radius and moment of inertia, have been shown to correlate with parameters characterizing the symmetry energy of nuclear matter…

Solar and Stellar Astrophysics · Physics 2011-12-12 William G. Newton , Michael Gearheart , Josh Hooker , Bao-An Li