Superfluidity of $\Lambda$ hyperons in warm strange hadronic star matter

Abstract

In this work we evaluate the ${}^1{S}_0$ superfluidity of $\Lambda$ hyperons in $\beta$-stable strange hadronic matter. We investigate the equation of state (EOS) of hadronic matter at finite values of baryon density and temperature in the relativistic mean field (RMF) theory. Effects of the introduced isoscalar-isovector cross-interaction term on the $\Lambda$ superfluidity are investigated systematically. In addition, the temperature effects on the superfluidity of $\Lambda$ hyperons in hadronic matter are discussed. It is found that the density region and the magnitude of the $\Lambda$ pairing gap are dependent on the cross-interaction term. The obtained maximal critical temperature of $\Lambda$ superfluid is around $10^9$ K.

5 figures

References in corpus (13)

• Neutron-Rich Nuclei in Heaven and Earth
• Constraints on the high-density nuclear equation of state from the phenomenology of compact stars and heavy-ion collisions
• Relativistic effective interaction for nuclei, giant resonances, and neutron stars
• In-medium nuclear interactions of low-energy hadrons
• Pygmy dipole resonance as a constraint on the neutron skin of heavy nuclei
• Tables of Hyperonic Matter Equation of State for Core-Collapse Supernovae
• Neutron star properties and the symmetry energy
• Hot and dense hadronic matter in an effective mean field approach
• Optimization of relativistic mean field model for finite nuclei to neutron star matter
• Occurrence of Hyperon Superfluidity in Neutron Star Cores
• Single-Λ Hypernuclei in the Relativistic Mean-Field Theory with parameter set FSU
• Effects of the density dependence of nuclear symmetry energy on properties of superheavy nuclei
• Nuclear superfluidity in isospin asymmetric matter within the Skyrme model

Cited by in corpus (5)

• Superfluidity in nuclear systems and neutron stars
• Solution of the Hyperon Puzzle within a Relativistic Mean-Field Model
• Decay of massive scalar field in a black hole background immersed in magnetic field
• Neutron stars including the effects of chaotic magnetic fields and the anomalous magnetic moments
• Effects of Finite Temperature and Pairing Correlations in Multi-$\Lambda$ Hypernuclei