Surface and curvature tensions of cold quark matter in the SU(3)fNJL model with vector interactions

Author:

Izzo Villafañe M. F.1,Lugones G.2,Grunfeld A. G.13ORCID

Affiliation:

1. Physics Department Comisión Nacional de Energía Atómica (C.N.E.A) Buenos Aires Argentina

2. Centro de Ciências Naturais e Humanas Universidade Federal do ABC Bangú Santo André Brazil

3. CONICET, Godoy Cruz 2290 (C1425FQB) CABA Argentina

Abstract

AbstractWe investigate the surface and curvature tensions of three‐flavor cold quark matter in a state of electric charge neutrality and chemical equilibrium under weak interactions, employing the Nambu–Jona–Lasinio model with the inclusion of vector interactions. To account for finite‐size effects we adopt the multiple‐reflection expansion framework and present our results for various input parameters. Our results indicate that both surface and curvature tensions increase with heightened vector interactions and density. Furthermore, we note that the restoration of chiral symmetry in the strange quark sector leads to a modest reduction in curvature tension and a substantial increase in surface tension.

Funder

Facultad de Ciencias Exactas, Universidad Nacional de La Plata

Fundação de Amparo à Pesquisa do Estado de São Paulo

Publisher

Wiley

Subject

Space and Planetary Science,Astronomy and Astrophysics

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