Observational constraints on dual intermediate inflation

John D. Barrow, Macarena Lagos, and João Magueijo
Phys. Rev. D 89, 083525 – Published 9 April 2014

Abstract

We explore the observational implications of models of intermediate inflation driven by modified dispersion relations, specifically those representing the phenomenon of dimensional reduction in the ultraviolet limit. These models are distinct from the standard ones because they do not require violations of the strong energy condition, and this is reflected in their structure formation properties. We find that they can naturally accommodate deviations from exact scale invariance. They also make clear predictions for the running of the spectral index and tensor modes, rendering the models straightforwardly falsifiable. We discuss the observational prospects for these models and the implications these may have for quantum gravity scenarios.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
1 More
  • Received 30 January 2014

DOI:https://doi.org/10.1103/PhysRevD.89.083525

© 2014 American Physical Society

Authors & Affiliations

John D. Barrow1,*, Macarena Lagos2,3,†, and João Magueijo2,‡

  • 1DAMTP, Centre for Mathematical Sciences, University of Cambridge, Wilberforce Road, Cambridge CB3 0WA, United Kingdom
  • 2Theoretical Physics, Blackett Laboratory, Imperial College, London SW7 2BZ, United Kingdom
  • 3Astrophysics, University of Oxford, DWB, Keble Road, Oxford OX1 3RH, United Kindgom

  • *jdb34@hermes.cam.ac.uk
  • m.lagos13@imperial.ac.uk
  • j.magueijo@imperial.ac.uk

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 89, Iss. 8 — 15 April 2014

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review D

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×