Inflatonless Inflation

Abstract

We consider a 4+N dimensional Einstein gravity coupled to a non-linear sigma model. This theory admits a solution in which the N extra dimensions contract exponentially while the ordinary space expand exponentially. Physically, the non-linear sigma fields induce the dynamical compactification of the extra dimensions, which in turn drives inflation. No inflatons are required.

12 pages, version to appear in IJMPA

References in corpus (3)

• Reheating in Inflationary Cosmology: Theory and Applications
• String Cosmology: A Review
• Particle physics models of inflation and curvaton scenarios

Cited by in corpus (6)

• Inflation Compactification from Dynamical space time
• Late Time Acceleration of the 3-Space in a Higher Dimensional Steady State Universe in Dilaton Gravity
• Cosmological Perturbations of a Quartet of Scalar Fields with a Spatially Constant Gradient
• Spacetime Emergence and General Covariance Transmutation
• The Dynamical Evolution of 3-Space in a Higher Dimensional Steady State Universe
• $\Lambda$CDM cosmology with a quiescent anisotropy in a higher dimensional steady state universe