Degeneracy in the Inference of Phase Transitions in the Neutron Star Equation of State from Gravitational Wave Data

被引：20

作者：

Raithel, Carolyn A. ^{[1
,2
,3
]}

Most, Elias R. ^{[1
,2
,3
]}

机构：

[1] Inst Adv Study, Sch Nat Sci, 1 Einstein Dr, Princeton, NJ 08540 USA

[2] Princeton Univ, Princeton Ctr Theoret Sci, Jadwin Hall, Princeton, NJ 08544 USA

[3] Princeton Univ, Princeton Grav Initiat, Jadwin Hall, Princeton, NJ 08544 USA

来源：

PHYSICAL REVIEW LETTERS | 2023年 / 130卷 / 20期

基金：

美国国家科学基金会;

关键词：

TIDAL DEFORMABILITY; MAXIMUM MASS; NICER VIEW; GW170817; MATTER; CONSTRAINTS; RADIUS; OBSERVABLES;

D O I：

10.1103/PhysRevLett.130.201403

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Gravitational wave (GW) detections of binary neutron star inspirals will be crucial for constraining the dense matter equation of state (EOS). We demonstrate a new degeneracy in the mapping from tidal deformability data to the EOS, which occurs for models with strong phase transitions. We find that there exists a new family of EOS with phase transitions that set in at different densities and that predict neutron star radii that differ by up to similar to 500 m but that produce nearly identical tidal deformabilities for all neutron star masses. Next-generation GW detectors and advances in nuclear theory may be needed to resolve this degeneracy.

引用

页数：7

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