Large field inflation in type IIA string theory

International Conference on Atomic and Nuclear Physics

November 17-18, 2016 Atlanta, USA

Dagoberto Escobar

Instituto de F�­sica Te�³rica UAM/CSIC, Spain

Posters & Accepted Abstracts: J Astrophys Aerospace Technol

Abstract :

Understanding the physics of inflation is one of the main challenges in fundamental physics due to that inflationary dynamics is very sensitive to quantum a gravity correction; that is why crucial to understand how these corrections are controlled within a specific framework of quantum gravity. String Theory provides a well-defined quantum theory to understand gravitational and gauge interactions and hence a promising description of the physics of the early universe, it is therefore important to develop inflationary mechanism within the theory, this could yield detectable effects in the cosmic microwave background (CMB) and such effects could be detected by current and upcoming experiments, which provides us an opportunity to taste some predictions of String Theory. We propose a new scenario of large field inflation in type IIA string compactifications in which the key ingredient is a D6-brane that creates a potential for the inflaton (where the inflaton can be either a B-field axion or a D6-brane Wilson line). We compute the corrections to the effective potential of the inflaton, furthermore we find a simple mechanism to lower the inflaton mass with respect to the rest of closed string moduli stabilized by fluxes. Finally, we show that predictions for the inflationary parameters nicely fit with the current bounds from Planck collaboration.

Biography :

Email: d.escobar@csic.es