Prescription for successful extended inflation

Daile La, Paul J. Steinhardt, Edmund W. Bertschinger

Research output: Contribution to journalArticlepeer-review

213 Scopus citations


Extended inflation is a new approach to inflationary cosmology based on models closely related to Brans-Dicke theory; e.g., certain induced gravity, supergravity, and superstring models. In each of these theories, the effective gravitational constant is a function of some scalar field, ø, which varies with time during the inflationary phase transition. We show that a model consistent with astrophysical and cosmological bounds must include a non-trivial potential for ø and the Brans-Dicke parameter, b, must lie in the range 1.5<b<25.

Original languageEnglish (US)
Pages (from-to)231-236
Number of pages6
JournalPhysics Letters B
Issue number3
StatePublished - Nov 9 1989
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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