首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Emergent universe from scale invariant two measures theory
Authors:Sergio del Campo  Eduardo I Guendelman  Alexander B Kaganovich  Ramón Herrera  Pedro Labraña
Institution:1. Instituto de Física, Pontificia Universidad Católica de Valparaíso, Avenida Brasil 2950, Casilla 4059, Valparaíso, Chile;2. Physics Department, Ben Gurion University of the Negev, Beer Sheva 84105, Israel;3. Departamento de Física, Universidad del Bío Bío, Avenida Collao 1202, Casilla 5-C, Concepción, Chile
Abstract:The dilaton-gravity sector of a linear in the scalar curvature, scale invariant Two Measures Field Theory (TMT), is explored in detail in the context of closed FRW cosmology and shown to allow stable emerging universe solutions. The model possesses scale invariance which is spontaneously broken due to the intrinsic features of the TMT dynamics. We study the transition from the emerging phase to inflation, and then to a zero cosmological constant phase. We also study the spectrum of density perturbations and the constraints that impose on the parameters of the theory.
Keywords:Emergent universe  Inflation
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号