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Flat space cosmologies in two dimensions: Phase transitions and asymptotic mass domination.
- Source :
-
Physical Review D: Particles, Fields, Gravitation & Cosmology . Oct2014, Vol. 90 Issue 8-B, p1-13. 13p. - Publication Year :
- 2014
-
Abstract
- We study flat space cosmologies in two dimensions by taking the flat space limit of the Achúcarro-Ortiz model. We unravel a phase transition between hot flat space and flat space cosmologies, and derive a new dilaton-dependent counterterm required for the consistency of the Euclidean partition function. Our results generalize to asymptotically mass-dominated two-dimensional dilaton gravity models, whose thermodynamical properties we discuss. The novel case of asymptotic mass domination is covered neither by the comprehensive discussion of Grumiller and McNees [J. High Energy Phys. 04 (2007) 074] nor by the more recent generalization to dilaton gravity with confining U(1) charges in Grumiller et al. [Phys. Rev. D 90, 044032 (2014)]. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 24700010
- Volume :
- 90
- Issue :
- 8-B
- Database :
- Academic Search Index
- Journal :
- Physical Review D: Particles, Fields, Gravitation & Cosmology
- Publication Type :
- Periodical
- Accession number :
- 100008215
- Full Text :
- https://doi.org/10.1103/PhysRevD.90.084041