Influence of a scalar-isovector δ-meson field on the quark phase structure in neutron stars

• Published in: Research in astronomy and astrophysics Vol. 10; no. 12; pp. 1255 - 1264
• Main Author: Alaverdyan, Grigor Bakhshi
• Format: Journal Article
• Language: English
• Published: IOP Publishing 01.12.2010; Yerevan State University,Yerevan 0025,Armenia
• Subjects: 上夸克; 中子星; 介子场; 强子物质; 相对论平均场理论; 相结构; 退禁闭相变; neutron-quark; dense matter-equation of state-mean-field-stars
• ISSN: 1674-4527; 2397-6209; 2397-6209
• DOI: 10.1088/1674-4527/10/12/006

The deconfinement phase transition from hadronic matter to quark matter in the interior of compact stars is investigated. The hadronic phase is described in the framework of relativistic mean-field theory, where the scalar-isovector 6-meson effec- tive field is also taken into account. The MIT bag model for describing a quark phase is used. The changes of the parameters of phase transition caused by the presence of a δ-meson field are explored. Finally, alterations in the integral and structural parameters of hybrid stars due to both a deconfinement phase transition and inclusion of a δ-meson field are discussed.