Quark matter revisited with non-extensive MIT bag model

Pedro H. G. Cardoso; Tiago Nunes da Silva; Airton Deppman; Débora P. Menezes

doi:10.1140/epja/i2017-12388-0

EPJ

Quark matter revisited with non-extensive MIT bag model

Pedro H. G. Cardoso¹, Tiago Nunes da Silva¹^*, Airton Deppman² and Débora P. Menezes¹

¹ Departamento de Física, CFM, Universidade Federal de Santa Catarina, 88040-900, Florianópolis, Brazil
² Instituto de Física da Universidade de São Paulo, Rua do Matão, 187 - Travessa R, São Paulo, Brazil

Received: 20 June 2017
Accepted: 14 September 2017
Published online: 3 October 2017

Abstract

In this work we revisit the MIT bag model to describe quark matter within both the usual Fermi-Dirac and the Tsallis statistics. We verify the effects of the non-additivity of the latter by analysing two different pictures: the first order phase transition of the QCD phase diagram and stellar matter properties. While the QCD phase diagram is visually affected by the Tsallis statistics, the resulting effects on quark star macroscopic properties are barely noticed.

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