Slow-walking inflation
- Max-Planck-Institut für Physik, Föhringer Ring 6, 80805 München (Germany)
- Department of Physics, University of Swansea, Singleton Park, Swansea SA2 8PP (United Kingdom)
- Institute of Cosmology and Gravitation, University of Portsmouth, Portsmouth, PO1 3FX (United Kingdom)
We propose a new model of slow-roll inflation in string cosmology, based on warped throat supergravity solutions displaying 'walking' dynamics, i.e. the coupling constant of the dual gauge theory slowly varies over a range of energy scales. The features of the throat geometry are sourced by a rich field content, given by the dilaton and RR and NS fluxes. By considering the motion of a D3-brane probe in this geometry, we are able to analytically calculate the brane potential in a physically interesting regime. This potential has an inflection point: in its proximity we realize a model of inflation lasting sixty e-foldings, and whose robust predictions are in agreement with current observations. We are also able to interpret some of the most interesting aspects of this scenario in terms of the properties of the QFT dual theory.
- OSTI ID:
- 22279598
- Journal Information:
- Journal of Cosmology and Astroparticle Physics, Vol. 2013, Issue 01; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
- Country of Publication:
- United States
- Language:
- English
Similar Records
Chasing brane inflation in string theory
Inflation on an Open Racetrack