1. Flat space cosmologies in two dimensions: Phase transitions and asymptotic mass domination.
- Author
-
Bagchi, Arjun, Grumiller, Daniel, Salzer, Jakob, Sarkar, Sourav, and Schöller, Friedrich
- Subjects
- *
METAPHYSICAL cosmology , *SPACETIME , *PHASE transitions , *MASS (Physics) , *DILATON , *GRAVITY - 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]
- Published
- 2014
- Full Text
- View/download PDF