Flat space cosmologies in two dimensions - Phase transitions and asymptotic mass-domination

Autor:	Bagchi, Arjun, Grumiller, Daniel, Salzer, Jakob, Sarkar, Sourav, Schöller, Friedrich
Rok vydání:	2014
Předmět:	High Energy Physics - Theory General Relativity and Quantum Cosmology
Zdroj:	Phys. Rev. D 90, 084041 (2014)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevD.90.084041
Popis:	We study flat space cosmologies in two dimensions by taking the flat space limit of the Achucarro-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 2-dimensional dilaton gravity models, whose thermodynamical properties we discuss. The novel case of asymptotic mass-domination is neither covered by the comprehensive discussion of hep-th/0703230 nor by the more recent generalization to dilaton gravity with confining U(1) charges in 1406.7007. Comment: 26 pp
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1408.5337 Zobrazit plný text záznamu View this record from Arxiv