Thermodynamic instabilities in holographic neutron stars at finite temperature

In a recent work we explored the backreaction of a self-gravitating system of elementary neutral fermions at finite temperature in asymptotically AdS space, known as the "holographic neutron star". Such study was carried out by solving the Tolman-Oppenhemier-Volkoff equations under a perfe...

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Detalles Bibliográficos
Autores principales: Argüelles, Carlos Raúl, Canavesi, Tobías, Díaz, Manuel, Grandi, Nicolás Esteban
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2020
Materias:
Física
Scalar field
Gravitational collapse
Physics
World line
Critical point (thermodynamics)
Free entropy
Neutron star
Theoretical physics
Perfect fluid
Degenerate energy levels
Space (mathematics)
Equation of state
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/125193
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-125193
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Scalar field
Gravitational collapse
Physics
World line
Critical point (thermodynamics)
Free entropy
Neutron star
Theoretical physics
Perfect fluid
Degenerate energy levels
Space (mathematics)
Equation of state
spellingShingle Física
Scalar field
Gravitational collapse
Physics
World line
Critical point (thermodynamics)
Free entropy
Neutron star
Theoretical physics
Perfect fluid
Degenerate energy levels
Space (mathematics)
Equation of state
Argüelles, Carlos Raúl
Canavesi, Tobías
Díaz, Manuel
Grandi, Nicolás Esteban
Thermodynamic instabilities in holographic neutron stars at finite temperature
topic_facet Física
Scalar field
Gravitational collapse
Physics
World line
Critical point (thermodynamics)
Free entropy
Neutron star
Theoretical physics
Perfect fluid
Degenerate energy levels
Space (mathematics)
Equation of state
description In a recent work we explored the backreaction of a self-gravitating system of elementary neutral fermions at finite temperature in asymptotically AdS space, known as the "holographic neutron star". Such study was carried out by solving the Tolman-Oppenhemier-Volkoff equations under a perfect fluid assumption for the fermionic equation of state, accounting for both relativistic and finite temperature effects. Novel "dense core - diluted halo" density profiles in the AdS bulk were found, with corresponding two-point scalar field correlators obtained within the world line formalism, as a probe of the dual field theory. In this work we cover a much broader free parameter-space of the fermionic solutions in the bulk (from dilute to highly degenerate regime including for the critical point of gravitational collapse), and study their thermodynamic stability by calculating the grand canonical potential and free entropy. Such a stability analysis is performed using the Katz criterion, a technique historically applied to study the gravothermal catastrophe proper of classical self-gravitating systems in flat space. We identify some characteristic features of the unstable regions, both from the bulk and boundary perspectives, that can be used as proxies to detect instabilities on this kind of self-gravitating systems.
format Articulo
Preprint
author Argüelles, Carlos Raúl
Canavesi, Tobías
Díaz, Manuel
Grandi, Nicolás Esteban
author_facet Argüelles, Carlos Raúl
Canavesi, Tobías
Díaz, Manuel
Grandi, Nicolás Esteban
author_sort Argüelles, Carlos Raúl
title Thermodynamic instabilities in holographic neutron stars at finite temperature
title_short Thermodynamic instabilities in holographic neutron stars at finite temperature
title_full Thermodynamic instabilities in holographic neutron stars at finite temperature
title_fullStr Thermodynamic instabilities in holographic neutron stars at finite temperature
title_full_unstemmed Thermodynamic instabilities in holographic neutron stars at finite temperature
title_sort thermodynamic instabilities in holographic neutron stars at finite temperature
publishDate 2020
url http://sedici.unlp.edu.ar/handle/10915/125193
work_keys_str_mv AT arguellescarlosraul thermodynamicinstabilitiesinholographicneutronstarsatfinitetemperature
AT canavesitobias thermodynamicinstabilitiesinholographicneutronstarsatfinitetemperature
AT diazmanuel thermodynamicinstabilitiesinholographicneutronstarsatfinitetemperature
AT grandinicolasesteban thermodynamicinstabilitiesinholographicneutronstarsatfinitetemperature
bdutipo_str Repositorios
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