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Scale-Invariant Hidden Local Symmetry, Topology Change and Dense Baryonic Matter II
- Source :
- Phys. Rev. D 96, 014031 (2017)
- Publication Year :
- 2017
-
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.<br />Comment: 31 pages, 11 figures
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. D 96, 014031 (2017)
- Publication Type :
- Report
- Accession number :
- edsarx.1704.02775
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevD.96.014031