Natural Inflation: Particle Physics Models, Power Law Spectra for Large Scale Structure, and Constraints from COBE

Fred Adams, J. R. Bond, Katherine Freese +2

A pseudo-Nambu-Goldstone boson, with a potential of the form $V(\varphi )={\Lambda }^4[1\pm \cos (\varphi /f)],naturallygivesrisetoinflationif$f \sim M_{Pl}$and$Λ\sim M_{GUT}$. We show how thi…