Phase transitions in geometrothermodynamic model of charged generalized-NUT black holes

Modern cosmological models are constructed in the framework of thermodynamic approaches developed within a Van der Waals-Maxwell theory of the first-order phase transitions. In the present work we study a geometrothermodynamics of two-dimensional first-order phase transition with the distribution of...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 1557; no. 1; pp. 12024 - 12030
Main Authors Grushevskaya, H V, Krylova, N G
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.05.2020
Subjects
Astronomical models
Bifurcations
Black holes
Cosmology
Curvature
Gibbs free energy
Phase transitions
Physics
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Summary:Modern cosmological models are constructed in the framework of thermodynamic approaches developed within a Van der Waals-Maxwell theory of the first-order phase transitions. In the present work we study a geometrothermodynamics of two-dimensional first-order phase transition with the distribution of relaxation times in a configuration space which describes a spacetime with Newman-Unti-Tamburino-like metric. We utilized the geometrothermodynamical approach to construct the model of a charged generalized-NUT black hole. We reveal following features of the black-hole phase transition: there are series of bifurcations of pitchfork type in dependences of the Gibbs free energy on the Hawking temperature, and although a scalar Berwald curvature of space changes sign in the phase transition, black-hole stability depends on sign of the curvature after the transition.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1557/1/012024