Emergent universe from scale invariant two measures theory

Sergio Del Campo, Eduardo I. Guendelman, Alexander B. Kaganovich, Ramón Herrera, Pedro Labraña

Research output: Contribution to journalArticlepeer-review

39 Scopus citations


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.

Original languageEnglish
Pages (from-to)211-216
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number4
StatePublished - 16 May 2011


  • Emergent universe
  • Inflation


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