Asymptotic freedom, asymptotic flatness and cosmology - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Journal of Cosmology and Astroparticle Physics Year : 2013

Asymptotic freedom, asymptotic flatness and cosmology

E. Kiritsis

Abstract

Holographic RG flows in some cases are known to be related to cosmological solutions. In this paper another example of such correspondence is provided. Holographic RG flows giving rise to asymptotically-free β-functions have been analyzed in connection with holographic models of QCD. They are shown upon Wick rotation to provide a large class of inflationary models with logarithmically-soft inflaton potentials. The scalar spectral index is universal and depends only on the number of e-foldings. The ratio of tensor to scalar power depends on the single extra real parameter that defines this class of models. The Starobinsky inflationary model as well as the recently proposed models of T-inflation are members of this class. The holographic setup gives a completely new (and contrasting) view to the stability, naturalness and other problems of such inflationary models.

Dates and versions

in2p3-00903690 , version 1 (12-11-2013)

Identifiers

Cite

E. Kiritsis. Asymptotic freedom, asymptotic flatness and cosmology. Journal of Cosmology and Astroparticle Physics, 2013, 11, pp.011. ⟨10.1088/1475-7516/2013/11/011⟩. ⟨in2p3-00903690⟩
36 View
0 Download

Altmetric

Share

Gmail Facebook X LinkedIn More