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Related papers: Nuclear pasta in hot dense matter and its implicat…

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Neutron-rich matter at subnuclear densities may involve complex structures displaying a variety of shapes, such as spherical, slablike, and/or rodlike shapes. These phases of the {\it nuclear pasta} are expected to exist in the crust of…

Astrophysics · Physics 2009-11-10 C. J. Horowitz , M. A. Perez-Garcia , J. Piekarewicz

Nuclear pasta, with nucleons arranged into tubes, sheets, or other complex shapes, is expected in core collapse supernovae (SNe) at just below nuclear density. We calculate the additional opacity from neutrino-pasta coherent scattering…

High Energy Astrophysical Phenomena · Physics 2016-12-01 C. J. Horowitz , D. K. Berry , M. E. Caplan , T. Fischer , Zidu Lin , W. G. Newton , E. O'Connor , L. F. Roberts

Nuclear ``pasta'', nonspherical nuclei in dense matter, is predicted to occur in collapsing supernova cores. We show how pasta phases affect the neutrino transport cross section via weak neutral current using several nuclear models. This is…

Neutron stars serve as excellent next-generation thermal detectors of dark matter, heated by the scattering and annihilation of dark matter accelerated to relativistic speeds in their deep gravitational wells. However, the dynamics of…

High Energy Physics - Phenomenology · Physics 2020-03-24 Javier F. Acevedo , Joseph Bramante , Rebecca K. Leane , Nirmal Raj

The study of neutron rich matter, present in neutron star, proto-neutron stars and core-collapse supernovae, can lead to further understanding of the behavior of nuclear matter in highly asymmetric nuclei. Heterogeneous structures are…

Nuclear Theory · Physics 2017-04-20 P. N. Alcain , C. O. Dorso

Background: Exotic non-spherical nuclear pasta shapes are expected in nuclear matter at just below saturation density because of competition between short range nuclear attraction and long range Coulomb repulsion. Purpose: We explore the…

Nuclear Theory · Physics 2015-07-01 M. E. Caplan , A. S. Schneider , C. J. Horowitz , D. K. Berry

The effects of the $\alpha$ particles in nuclear matter at low densities are investigated within three different parametrizations of relativistic models at finite temperature. Both homogeneous and inhomogeneous matter (pasta phase) are…

Nuclear Theory · Physics 2014-11-21 S. S. Avancini , C. C. Barros , D. P. Menezes , C. Providência

Neutrinos emitted during the collapse, bounce and subsequent explosion provide information about supernova dynamics. The neutrino spectra are determined by weak interactions with nuclei and nucleons in the inner regions of the star, and…

Astrophysics · Physics 2009-12-15 S. R. Souza , A. W. Steiner , W. G. Lynch , R. Donangelo , M. A. Famiano

Background: Nuclear pasta matter, emerging due to the competition between the long-range Coulomb force and the short-range strong force, is believed to be present in astrophysical scenarios, such as neutron stars and core-collapse…

Nuclear Theory · Physics 2020-05-27 B. Schuetrumpf , G. Martínez-Pinedo , P. -G. Reinhard

In this work, we focus on different length scales within the dynamics of nucleons in conditions according to the neutron star crust, with a semiclassical molecular dynamics model, studying isospin symmetric matter at subsaturation…

Nuclear Theory · Physics 2014-12-22 Pablo N. Alcain , Pedro A. Giménez Molinelli , Claudio O. Dorso

Complex and exotic nuclear geometries are expected to appear naturally in dense nuclear matter found in the crust of neutron stars and supernovae environment collectively referred to as nuclear pasta. The pasta geometries depend on the…

Nuclear Theory · Physics 2017-05-15 F. J. Fattoyev , C. J. Horowitz , B. Schuetrumpf

The cell structure of $\beta$-stable clusters in the inner crust of cold and warm neutron stars is studied within the Thomas-Fermi approach using relativistic mean field nuclear models. The relative size of the inner crust and the pasta…

In neutron star crust, non-uniform structure of nuclear matter is expected, which is called the "pasta" structure. From the recent studies of giant flares in magnetars, these structures might be related to some observables and physical…

Nuclear Theory · Physics 2014-01-31 Minoru Okamoto , Toshiki Maruyama , Kazuhiro Yabana , Toshitaka Tatsumi

We investigate nuclear pasta phases appearing in hot neutron-star matter based on the compressible liquid-drop model, where the matter consists of a dense liquid phase and a dilute gas phase separated by a sharp interface. The surface…

Nuclear Theory · Physics 2026-03-18 Jian Zhou , Junbo Pang , Hong Shen , Jinniu Hu

We explore the properties of nuclear pasta appearing in supernova matter, i.e., matter at finite temperature with a fixed proton fraction. The pasta phases with a series of geometric shapes are studied using the compressible liquid-drop…

High Energy Astrophysical Phenomena · Physics 2020-08-05 Fan Ji , Jinniu Hu , Shishao Bao , Hong Shen

We investigate nuclear pasta structures at high temperatures in the framework of relativistic mean field model with Thomas-Fermi approximation. Typical pasta structures (droplet, rod, slab, tube, and bubble) are obtained, which form various…

Nuclear Theory · Physics 2022-09-28 Cheng-Jun Xia , Toshiki Maruyama , Nobutoshi Yasutake , Toshitaka Tatsumi

The formation of complex nonuniform phases of nuclear matter, known as nuclear pasta, is studied with molecular dynamics simulations containing 51200 nucleons. A phenomenological nuclear interaction is used that reproduces the saturation…

Nuclear Theory · Physics 2013-12-25 A. S. Schneider , C. J. Horowitz , J. Hughto , D. K. Berry

Nuclear matter under astrophysical conditions is explored with time-dependent and static Hartree-Fock calculations. The focus is in a regime of densities where matter segregates into liquid and gaseous phases unfolding a rich scenario of…

Nuclear Theory · Physics 2014-11-19 B. Schuetrumpf , K. Iida , J. A. Maruhn , P. -G. Reinhard

Structure of cold and hot dense matter at subnuclear densities is investigated by quantum molecular dynamics (QMD) simulations. Obtained phase diagrams show that the density of the phase boundaries between the different nuclear structures…

Astrophysics · Physics 2007-05-23 Gentaro Watanabe , Katsuhiko Sato , Kenji Yasuoka , Toshikazu Ebisuzaki

The nuclear pasta -- a novel state of matter having nucleons arranged in a variety of complex shapes -- is expected to be found in the crust of neutron stars and in core-collapse supernovae at subnuclear densities of about $10^{14}$…

Nuclear Theory · Physics 2016-08-16 C. J. Horowitz , M. A. Pérez-García , D. K. Berry , J. Piekarewicz
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