Work

Exploring the first-order phase transition in neutron stars using the parity doublet model and a Nambu–Jona-Lasinio–type quark model

Year: 2024

Type: article

Abstract: We investigate the possibility and impacts of a first-order phase transition from hadronic matter to quark matter in neutron stars (NSs) using two specific models: the parity doublet model for the hadronic phase and the Nambu--Jona-Lasinio--type model for the quark phase. By combining these models, we construct hybrid equations of state that capture the transition between the two phases. We explore the parameter space of both models to identify the conditions under which a first-order phase transition can occur and study its effects on NS properties. We identify the suitable parameter space and constrain the onset density of the first-order phase transition.

Source: Physical Review C

DOI: 10.1103/physrevc.110.045802

Authors: Bikai Gao, Wen-Li Yuan, Masayasu Harada, Yong-Liang Ma

Institutions: Nagoya University, Nanjing University, Peking University, State Key Laboratory of Nuclear Physics and Technology

Language: English

Topic: Pulsars and Gravitational Waves Research

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Japan Science and Technology Corporation, National Natural Science Foundation of China, Japan Society for the Promotion of Science, National Key Research and Development Program of China