Information Theoretical Methods as Discerning Quantifiers of the Equations of State of Neutron Stars

8th International Workshop on Hadron Physics

Souza, Rodrigo Alvares De^1 ; Avellar, Marcio G. B. De^1 ; Horvath, Jorge E.^1 ; Paret, D.M.^2

Instituto de Astronomia, Geofísica e Ciências Atmosféricas, Universidade de São Paulo, São Paulo, Brazil^1

Facultad de Física, Universidad de la Habana, San Lázaro y L, Vedado La Habana

10400, Cuba^2

关键词: Equation of state;    Neutron stars;    Parametrizations;    Quark matter;    Statistical measures;    Theoretical methods;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/706/5/052030/pdf
DOI  :  10.1088/1742-6596/706/5/052030

来源: IOP

【 摘 要 】

In this work we use the statistical measures of information entropy, disequilibrium and complexity to discriminate different approaches and parametrizations for different equations of state for quark stars. We confirm the usefulness of such quantities to quantify the role of interactions in such stars. We find that within this approach, a quark matter equation of state such as SU(2) NJL with vectorial coupling and phase transition is slightly favoured and deserves deeper studies.