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Natural inflation from fermion loops
1995
Physical Review D, Particles and fields
"Natural" inflationary theories are a class of models in which inflation is driven by a pseudo-Nambu-Goldstone boson. In this paper we consider two models, one old and one new, in which the potential for inflation is generated by loop effects from a fermion sector which explicitly breaks a global U(1) symmetry. In both models, we retrieve the "standard" natural inflation potential, V(θ) = Λ^4[1 + cos(θ / μ)], as a limiting case of the exact one-loop potential, but we carry out a general
doi:10.1103/physrevd.52.5529
pmid:10019082
fatcat:kiowt3swybcq5fdri3z5vt4lmq