Scale-Invariant Hidden Local Symmetry, Topology Change and Dense Baryonic Matter II

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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Submitted on : Monday, July 17, 2017 - 11:25:23 AM
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  • HAL Id : cea-01562966, version 1
  • ARXIV : 1704.02775

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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. 2017. ⟨cea-01562966⟩

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