We propose a new, generic mechanism of inflation mediated by a balance between potential forces and a Chern-Simons interaction. Such quasi-topological interactions are ubiquitous in string theory. In the minisuperspace approximation, their effect on the dynamics can be mapped onto the problem of a charged particle in an electromagnetic field together with an external potential; slow roll arises when the motion is dominated by the analogue of 'magnetic drift'. This mechanism permits inflation to proceed even in the presence of generic, steep scalar potentials. We suggest a possible experimental signature which, if observed, might be considered strong evidence for string theory.
|Original language||English (US)|
|Journal||Journal of High Energy Physics|
|State||Published - 2013|
- Brane Dynamics in Gauge Theories
- Cosmology of Theories beyond the SM
ASJC Scopus subject areas
- Nuclear and High Energy Physics