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Title: Hyperons and quarks in proto-neutron stars

Journal Article · · Monthly Notices of the Royal Astronomical Society
 [1];  [2];  [1];  [1];  [3];  [4]
  1. Department of Physics, Kent State University, Kent, OH 44243, USA
  2. Department of Physics and Astronomy, University of Tennessee, Knoxville, TN 37996, USA
  3. Department of Physics and Astronomy, University of Tennessee, Knoxville, TN 37996, USA, Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
  4. Department of Physics and Astronomy, University of Tennessee, Knoxville, TN 37996, USA, Department of Physics (Astro), University of Oxford, Keble Road, OX1 3RH Oxford, UK

ABSTRACT In this work, we study matter in the cores of proto-neutron stars, focusing on the impact of their composition on the stellar structure. We begin by examining the effects of finite temperature (through a fixed entropy per baryon) and lepton fraction on purely nucleonic matter by making use of the DSH (Du, Steiner & Holt) model. We then turn our attention to a relativistic mean-field model containing exotic degrees of freedom, the Chiral Mean Field (CMF) model, again, under the conditions of finite temperature and trapped neutrinos. In the latter, since both hyperons and quarks are found in the cores of large-mass stars, their interplay and the possibility of mixtures of phases is taken into account and analysed. Finally, we discuss how stellar rotation can affect our results.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
SC0018232; AC05-00OR22725
OSTI ID:
1513037
Alternate ID(s):
OSTI ID: 1560402
Journal Information:
Monthly Notices of the Royal Astronomical Society, Journal Name: Monthly Notices of the Royal Astronomical Society Vol. 486 Journal Issue: 4; ISSN 0035-8711
Publisher:
Oxford University PressCopyright Statement
Country of Publication:
United Kingdom
Language:
English
Citation Metrics:
Cited by: 13 works
Citation information provided by
Web of Science

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