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Journal Articles Physical Review D Year : 2017

Scale-invariant hidden local symmetry, topology change and dense baryonic matter II

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Abstract

Exploiting certain robust topological inputs from the skyrmion description of compressed baryonic matter with a scale-chiral symmetric Lagrangian, we predict the equation of state that is consistent with the properties of nuclear matter at the equilibrium density, supports the maximum mass of massive compact star $\sim 2 M_\odot$ and surprisingly gives the sound velocity close to the "conformal velocity" $1/\sqrt{3}$ at densities $\gtrsim 3 n_0$. At the core of this result is the observation that parity-doubling occurs in the nucleon structure as density goes above $\sim 2n_0$ with a chiral-singlet mass $m_0 \sim (0.6-0.9) m_N$, hinting at a possible up-to-date unsuspected source of proton mass and an emergence at high density of scale symmetry and flavor local symmetry, both hidden in the QCD vacuum.
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Dates and versions

cea-01562966 , version 1 (17-07-2017)
cea-01562966 , version 2 (06-12-2022)

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Cite

Won-Gi Paeng, Thomas T. S. Kuo, Hyun Kyu Lee, Yong-Liang Ma, Mannque Rho. Scale-invariant hidden local symmetry, topology change and dense baryonic matter II. Physical Review D, 2017, 96, pp.014031. ⟨10.1103/PhysRevD.96.014031⟩. ⟨cea-01562966v2⟩
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