Hartree approximation in curved spacetimes revisited II: The semiclassical Einstein equations and de Sitter self-consistent solutions

Autor:	Nacir, Diana L. López, Mazzitelli, Francisco D., Trombetta, Leonardo G.
Rok vydání:	2014
Předmět:	High Energy Physics - Theory General Relativity and Quantum Cosmology
Zdroj:	Phys. Rev. D 89, 084013 (2014)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevD.89.084013
Popis:	We consider the semiclassical Einstein equations (SEE) in the presence of a quantum scalar field with self-interaction $\lambda\phi^4$. Working in the Hartree truncation of the two-particle irreducible (2PI) effective action, we compute the vacuum expectation value of the energy-momentum tensor of the scalar field, which act as a source of the SEE. We obtain the renormalized SEE by implementing a consistent renormalization procedure. We apply our results to find self-consistent de Sitter solutions to the SEE in situations with or without spontaneous breaking of the $Z_2$-symmetry. Comment: 32 pages, 4 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1401.6094 Zobrazit plný text záznamu View this record from Arxiv