Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 2, Pages -Publisher
SPRINGER
DOI: 10.1007/JHEP02(2013)027
Keywords
Cosmology of Theories beyond the SM; Brane Dynamics in Gauge Theories; D-branes
Categories
Funding
- DOE [DE-FG02-90ER-40560]
- Kavli Institute for Cosmological Physics at the University of Chicago through NSF [NSF PHY-0114422, NSF PHY-0551142]
- endowment from the Kavli Foundation
- National Science Foundation [1066293]
- Division Of Physics
- Direct For Mathematical & Physical Scien [1125897] Funding Source: National Science Foundation
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We propose a hew, 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.
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