Equation of state of strongly magnetized matter with hyperons and Δ-resonances

  • We construct a new equation of state for the baryonic matter under an intense magnetic field within the framework of covariant density functional theory. The composition of matter includes hyperons as well as Δ-resonances. The extension of the nucleonic functional to the hypernuclear sector is constrained by the experimental data on Λ and Ξ-hypernuclei. We find that the equation of state stiffens with the inclusion of the magnetic field, which increases the maximum mass of neutron star compared to the non-magnetic case. In addition, the strangeness fraction in the matter is enhanced. Several observables, like the Dirac effective mass, particle abundances, etc. show typical oscillatory behavior as a function of the magnetic field and/or density which is traced back to the occupation pattern of Landau levels.

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Author:Vivek Baruah Thapa, Monika Sinha, Jia Jie LiORCiD, Armen SedrakianORCiDGND
URN:urn:nbn:de:hebis:30:3-565197
DOI:https://doi.org/10.3390/particles3040043
ISSN:2571-712X
Parent Title (German):Particles
Publisher:MDPI
Place of publication:Basel
Document Type:Article
Language:English
Date of Publication (online):2020/10/13
Date of first Publication:2020/10/13
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2020/11/19
Tag:equation of state; hyperons; magnetic fields; neutron stars;; resonances
Volume:30
Issue:4
Page Number:16
First Page:660
Last Page:675
HeBIS-PPN:477906648
Institutes:Physik / Physik
Wissenschaftliche Zentren und koordinierte Programme / Frankfurt Institute for Advanced Studies (FIAS)
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Sammlungen:Universitätspublikationen
Licence (German):License LogoCreative Commons - Namensnennung 4.0

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