Constraints in the Context of Induced-gravity Inflation

Details Constraints in the Context of Induced-gravity Inflation Constraints in the Context of Induced-gravity Inflation

1993-08-28

arxiv.org/abs/astro-ph/9308043v2

Phys.Rev. D49 (1994) 6347-6353

Astronomy and Astrophysics

Astrophysics

19 pp; 3 figures (not included -- available from author). Plain LaTeX. In press in Physical Review D

Scientific paper

10.1103/PhysRevD.49.6347

Constraints on the required flatness of the scalar potential $V(\phi)$ for a cousin-model to extended inflation are studied. It is shown that, unlike earlier results, Induced-gravity Inflation can lead to successful inflation with a very simple lagrangian and $\lambda \sim 10^{-6}$, rather than $10^{-15}$ as previously reported. A second order phase transition further enables this model to escape the \lq big bubble' problem of extended inflation, while retaining the latter's motivations based on the low-energy effective lagrangians of supergravity, superstring, and Kaluza-Klein theories.

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