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Camanho, X.O.; Edelstein, J.D.; Giribet, G.; Gomberoff, A. "Generalized phase transitions in Lovelock gravity" (2014) Physical Review D - Particles, Fields, Gravitation and Cosmology. 90(6)
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Abstract:

We investigate a novel mechanism for phase transitions that is a distinctive feature of higher-curvature gravity theories. For definiteness, we bound ourselves to the case of Lovelock gravities. These theories are known to have several branches of asymptotically anti-de Sitter solutions. Here, extending our previous work, we show that phase transitions among some of these branches are driven by a thermalon configuration: a bubble separating two regions of different effective cosmological constants, generically hosting a black hole in the interior. Above some critical temperature, this thermalon configuration is preferred with respect to the finite-temperature anti-de Sitter space, triggering a sophisticated version of the Hawking-Page transition. After being created, the unstable bubble configuration can in general dynamically change the asymptotic cosmological constant. While this phenomenon already occurs in the case of a gravity action with square curvature terms, we point out that in the case of Lovelock theory with cubic (and higher) terms new effects appear. For instance, the theory may admit more than one type of bubble and branches that are in principle free of pathologies may also decay through the thermalon mechanism. We also find ranges of the gravitational couplings for which the theory becomes sick. These add up to previously found restrictions to impose tighter constraints on higher-curvature gravities. The results of this paper point to an intricate phase diagram which might accommodate similarly rich behavior in the dual conformal field theory side. © 2014 American Physical Society.

Registro:

Documento: Artículo
Título:Generalized phase transitions in Lovelock gravity
Autor:Camanho, X.O.; Edelstein, J.D.; Giribet, G.; Gomberoff, A.
Filiación:Max-Planck-Institut für Gravitationsphysik, Albert-Einstein-Institut, Golm, 14476, Germany
Department of Particle Physics and IGFAE, University of Santiago de Compostela, Santiago de Compostela, E-15782, Spain
Centro de Estudios Científicos, CECS, Casilla 1469, Valdivia, Chile
University of Buenos Aires FCEN-UBA and IFIBA-CONICET, Ciudad Universitaria, Pabellón I, Buenos Aires, 1428, Argentina
Instituto de Física, Pontificia Universidad Católica de Valparaíso, Casilla 4950, Valparaíso, Chile
Departamento de Ciencias Físicas, Universidad Andres Bello, Avenida República 252, Santiago, Chile
Año:2014
Volumen:90
Número:6
DOI: http://dx.doi.org/10.1103/PhysRevD.90.064028
Título revista:Physical Review D - Particles, Fields, Gravitation and Cosmology
Título revista abreviado:Phys Rev D Part Fields Gravit Cosmol
ISSN:15507998
CODEN:PRVDA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v90_n6_p_Camanho

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Citas:

---------- APA ----------
Camanho, X.O., Edelstein, J.D., Giribet, G. & Gomberoff, A. (2014) . Generalized phase transitions in Lovelock gravity. Physical Review D - Particles, Fields, Gravitation and Cosmology, 90(6).
http://dx.doi.org/10.1103/PhysRevD.90.064028
---------- CHICAGO ----------
Camanho, X.O., Edelstein, J.D., Giribet, G., Gomberoff, A. "Generalized phase transitions in Lovelock gravity" . Physical Review D - Particles, Fields, Gravitation and Cosmology 90, no. 6 (2014).
http://dx.doi.org/10.1103/PhysRevD.90.064028
---------- MLA ----------
Camanho, X.O., Edelstein, J.D., Giribet, G., Gomberoff, A. "Generalized phase transitions in Lovelock gravity" . Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 90, no. 6, 2014.
http://dx.doi.org/10.1103/PhysRevD.90.064028
---------- VANCOUVER ----------
Camanho, X.O., Edelstein, J.D., Giribet, G., Gomberoff, A. Generalized phase transitions in Lovelock gravity. Phys Rev D Part Fields Gravit Cosmol. 2014;90(6).
http://dx.doi.org/10.1103/PhysRevD.90.064028