Relativistic hybrid stars with sequential first-order phase transitions in light of multimessenger constraints

Abstract

In this work, we consider the properties of compact stars in which quark matter has low- and high-density phases that are separated by a first-order phase transition. Thus, unlike the commonly considered case of a single phase transition from hadronic to quark matter, our models of hybrid stars contain sequential phase transitions from hadronic matter to low- and then to high-density quark matter phases. We extend our previous study of the parameter space of hybrid stars with a single phase transition to those with sequential phase transitions, taking into account the constraints on the mass and radius of neutron stars from the NICER experiment, the experimental inferences of the neutron skin thickness of the lead nucleus by the PREX-II experiment, and constraints on the tidal deformability from the gravitational-wave event GW170817. We determine the range of the masses for which both twin and triplet configurations, i.e., identical-mass stars with two and three different values of radii, arise.

v2: matches published version, 11 pages, 11 figures

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Cited by in corpus (17)

• Nuclear and Hybrid Equations of State in Light of the Low-Mass Compact Star in HESS J1731-347
• Hybrid star models in the light of new multi-messenger data
• New covariant density functionals of nuclear matter for compact star simulations
• Universal relations for compact stars with exotic degrees of freedom
• Impact of the nuclear equation of state on the formation of twin stars
• Confronting new NICER mass-radius measurements with phase transition in dense matter and twin compact stars
• Hybrid stars with large quark cores within the parity doublet model and modified NJL model
• Comprehensive Analysis of Constructing Hybrid Stars with an RG-consistent NJL Model
• Higgs-Confinement Transitions in QCD from Symmetry Protected Topological Phases
• Analyzing the dense matter equation of states in the light of the compact object HESS J1731-347
• Observational Probes of the Neutron Star Equation of State with Hyperons, Bosonic Dark Matter, and Quark Matter
• Confronting recent light compact star observations with color-flavor locked quark matter
• How Neutron Star Observations Point Towards Exotic Matter: Existing Explanations and a Prospective Proposal
• The mixed phase quark core in massive hybrid stars
• Constraining the competition between the deconfinement and chiral phase transitions in light of the multimessenger era
• Scalarized Hybrid Neutron Stars in Scalar Tensor Gravity
• Investigating Universal Relations in Compact Stars featuring $\Delta -$Admixed Exotic Dense Matter