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Title: Deconfinement phase transition in hybrid neutron stars from the Brueckner theory with three-body forces and a quark model with chiral mass scaling

Abstract

We study the properties of strange quark matter in equilibrium with normal nuclear matter. Instead of using the conventional bag model in quark sector, we achieve the confinement by a density-dependent quark mass derived from in-medium chiral condensates. In nuclear matter, we adopt the equation of state from the Brueckner-Bethe-Goldstone approach with three-body forces. It is found that the mixed phase can occur, for a reasonable confinement parameter, near the normal nuclear saturation density and goes over to pure quark matter at about 5 times the saturation. The onset of mixed and quark phases is compatible with the observed class of low-mass neutron stars, but it hinders the occurrence of kaon condensation.

Authors:
; ;  [1]
  1. China Center of Advanced Science and Technology (World Laboratory), P. O. Box 8730, Beijing 100080 (China)
Publication Date:
OSTI Identifier:
21191994
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 77; Journal Issue: 6; Other Information: DOI: 10.1103/PhysRevC.77.065807; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; BAG MODEL; BRUECKNER MODEL; CHIRALITY; CONFINEMENT; EQUATIONS OF STATE; EQUILIBRIUM; KAONS; MASS; NEUTRON STARS; NUCLEAR MATTER; PHASE TRANSFORMATIONS; QUARK MATTER; S QUARKS; SCALING; STRANGE PARTICLES; THREE-BODY PROBLEM

Citation Formats

Peng, G X, Li, A, Lombardo, U, Theoretical Physics Center for Science Facilities, Institute of High Energy Physics, CAS, Beijing 100049, Department of Physics, Graduate University, Chinese Academy of Sciences, Yuquan Rd. 19A, Beijing 100049, Dipartimento di Fisica e Astronomia, Universita di Catania, viale Andrea Doria 6, I-95125 Catania, Department of Physics and Institute of Theoretical Physics and Astrophysics, Xiamen University, Xiamen 361005, Laboratori Nazionali del Sud, Istituto Nazionale di Fisica Nucleare, Via S. Sofia 62, I-95123 Catania, and Dipartimento di Fisica e Astronomia, Universita di Catania, viale Andrea Doria 6, I-95125 Catania. Deconfinement phase transition in hybrid neutron stars from the Brueckner theory with three-body forces and a quark model with chiral mass scaling. United States: N. p., 2008. Web. doi:10.1103/PHYSREVC.77.065807.
Peng, G X, Li, A, Lombardo, U, Theoretical Physics Center for Science Facilities, Institute of High Energy Physics, CAS, Beijing 100049, Department of Physics, Graduate University, Chinese Academy of Sciences, Yuquan Rd. 19A, Beijing 100049, Dipartimento di Fisica e Astronomia, Universita di Catania, viale Andrea Doria 6, I-95125 Catania, Department of Physics and Institute of Theoretical Physics and Astrophysics, Xiamen University, Xiamen 361005, Laboratori Nazionali del Sud, Istituto Nazionale di Fisica Nucleare, Via S. Sofia 62, I-95123 Catania, & Dipartimento di Fisica e Astronomia, Universita di Catania, viale Andrea Doria 6, I-95125 Catania. Deconfinement phase transition in hybrid neutron stars from the Brueckner theory with three-body forces and a quark model with chiral mass scaling. United States. https://doi.org/10.1103/PHYSREVC.77.065807
Peng, G X, Li, A, Lombardo, U, Theoretical Physics Center for Science Facilities, Institute of High Energy Physics, CAS, Beijing 100049, Department of Physics, Graduate University, Chinese Academy of Sciences, Yuquan Rd. 19A, Beijing 100049, Dipartimento di Fisica e Astronomia, Universita di Catania, viale Andrea Doria 6, I-95125 Catania, Department of Physics and Institute of Theoretical Physics and Astrophysics, Xiamen University, Xiamen 361005, Laboratori Nazionali del Sud, Istituto Nazionale di Fisica Nucleare, Via S. Sofia 62, I-95123 Catania, and Dipartimento di Fisica e Astronomia, Universita di Catania, viale Andrea Doria 6, I-95125 Catania. Sun . "Deconfinement phase transition in hybrid neutron stars from the Brueckner theory with three-body forces and a quark model with chiral mass scaling". United States. https://doi.org/10.1103/PHYSREVC.77.065807.
@article{osti_21191994,
title = {Deconfinement phase transition in hybrid neutron stars from the Brueckner theory with three-body forces and a quark model with chiral mass scaling},
author = {Peng, G X and Li, A and Lombardo, U and Theoretical Physics Center for Science Facilities, Institute of High Energy Physics, CAS, Beijing 100049 and Department of Physics, Graduate University, Chinese Academy of Sciences, Yuquan Rd. 19A, Beijing 100049 and Dipartimento di Fisica e Astronomia, Universita di Catania, viale Andrea Doria 6, I-95125 Catania and Department of Physics and Institute of Theoretical Physics and Astrophysics, Xiamen University, Xiamen 361005 and Laboratori Nazionali del Sud, Istituto Nazionale di Fisica Nucleare, Via S. Sofia 62, I-95123 Catania and Dipartimento di Fisica e Astronomia, Universita di Catania, viale Andrea Doria 6, I-95125 Catania},
abstractNote = {We study the properties of strange quark matter in equilibrium with normal nuclear matter. Instead of using the conventional bag model in quark sector, we achieve the confinement by a density-dependent quark mass derived from in-medium chiral condensates. In nuclear matter, we adopt the equation of state from the Brueckner-Bethe-Goldstone approach with three-body forces. It is found that the mixed phase can occur, for a reasonable confinement parameter, near the normal nuclear saturation density and goes over to pure quark matter at about 5 times the saturation. The onset of mixed and quark phases is compatible with the observed class of low-mass neutron stars, but it hinders the occurrence of kaon condensation.},
doi = {10.1103/PHYSREVC.77.065807},
url = {https://www.osti.gov/biblio/21191994}, journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 6,
volume = 77,
place = {United States},
year = {2008},
month = {6}
}