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

Autor: T.T.S. Kuo, Won-Gi Paeng, Hyun Lee, Yong-Liang Ma, Mannque Rho
Přispěvatelé: Rare Isotope Science Project, Institute for Basic Science, Korea, Department of Physics and Astronomy [Stony Brook], Stony Brook University [SUNY] (SBU), State University of New York (SUNY)-State University of New York (SUNY), Hanyang University, Jilin University (JLU), Institut de Physique Théorique - UMR CNRS 3681 (IPHT), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: Physical Review D
Physical Review D, 2017, 96, pp.014031. ⟨10.1103/PhysRevD.96.014031⟩
ISSN: 1550-7998
1550-2368
Popis: 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.
Comment: 31 pages, 11 figures
Databáze: OpenAIRE