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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Exact solutions of a model for strange stars with interacting quarks

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Rocha, L. S. [1] ; Bernardo, A. [1] ; de Avellar, M. G. B. [2] ; Horvath, J. E. [1]
Total Authors: 4
[1] Univ Sao Paulo, Inst Astron Geofis & Ciencias Atmosfer, Dept Astron, Sao Paulo - Brazil
[2] ITA, Div Ciencias Fundamentais, Dept Fis, Sao Paulo - Brazil
Total Affiliations: 2
Document type: Journal article
Source: ASTRONOMISCHE NACHRICHTEN; v. 340, n. 1-3, SI, p. 180-183, JAN-MAR 2019.
Web of Science Citations: 0

The search for the true ground state of dense matter has remained open since Edward Witten proposed the strange matter hypothesis in 1984. In this hypothesis, the strange matter is assumed to be composed of u, d, and s quarks, having an energy per baryon lower than that of quark matter (only u and d), and even lower than that of the nuclear matter. In this sense, neutron stars would be strange stars. Later work showed that a color-flavor-locked (CFL) state would be preferred to the one without any pairing for a wide range of the parameters (gap , strange quark mass m(s), and bag constant B). We use an approximate, yet very accurate, CFL equation of state (EoS) to obtain exact solutions for the static Einstein field equations that describe a compact relativistic object, providing the first solution directly connected with microphysics. (AU)

FAPESP's process: 13/26258-4 - Superdense matter in the universe
Grantee:Manuel Máximo Bastos Malheiro de Oliveira
Support type: Research Projects - Thematic Grants