Autor:	Ilhan, Ibrahim B., Kovner, Alex
Rok vydání:	2014
Předmět:	High Energy Physics - Theory General Relativity and Quantum Cosmology High Energy Physics - Phenomenology
Zdroj:	Phys. Rev. D 89, 104015 (2014)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevD.89.104015
Popis:	We analyze conformal gravity in translationally invariant approximation, where the metric is taken to depend on time but not on spatial coordinates. We find that the field mode which in perturbation theory has a ghostlike kinetic term, turns into a tachyon when nonlinear interaction is accounted for. The kinetic term and potential for this mode have opposite signs. Solutions of nonlinear classical equations of motion develop a singularity in finite time determined by the initial conditions. Comment: 10 pages
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1403.4664 Zobrazit plný text záznamu View this record from Arxiv