TY - JOUR

T1 - Emergent universe from scale invariant two measures theory

AU - Del Campo, Sergio

AU - Guendelman, Eduardo I.

AU - Kaganovich, Alexander B.

AU - HERRERA APABLAZA, RAMON ALEJANDRO

AU - Labraña, Pedro

PY - 2011/5/16

Y1 - 2011/5/16

N2 - 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.

AB - 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.

KW - Emergent universe

KW - Inflation

UR - http://www.scopus.com/inward/record.url?scp=79955521500&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2011.03.061

DO - 10.1016/j.physletb.2011.03.061

M3 - Article

AN - SCOPUS:79955521500

VL - 699

SP - 211

EP - 216

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

IS - 4

ER -