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What's in the core of massive neutron stars?

2020/06/25 by Yong-Liang Ma, Ma, Yong-Liang, Mannque Rho +1 · 1 citation
Earth and Planetary Sciences · Physics and Astronomy · #Atomic and Subatomic Physics Research #FOS: Physical sciences #High Energy Astrophysical Phenomena (astro-ph.HE) #High Energy Physics - Phenomenology (hep-ph) #High-pressure geophysics and materials #Nuclear Theory (nucl-th) #Pulsars and Gravitational Waves Research

paper · pdf · doi:10.48550/arxiv.2006.14173

openalex publication_date 2020/06/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

When hadron-quark continuity is formulated in terms of a topology change at a density higher than twice the nuclear matter densiy n0 the core of massive compact stars can be described in terms of quasiparticles of fractional baryon charges, behaving neither like pure baryons nor deconfined quarks. Hidden symmetries, both local gauge and pseudo-conformal (or broken scale), emerge and give rise to the long-standing quenched gA in nuclear Gamow-Teller transitions at ∼ n0 and to the pseudo-conformal sound velocity vpcs2/c2≈ 1/3 at \gsim 3n0. These properties are confronted with the recent observations in superallowed Gamow-Teller transitions and in astrophysical observations.

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