Theories of inflation and conformal transformation

Sunil Kalara, Nemanja Kaloper, Keith A Olive

Research output: Contribution to journalArticlepeer-review

69 Scopus citations


We show that seberal different theories of inflation including R2, Brans-Dicke, and induced-gravity inflation are all related to generalized or power-law inflation by means of conformal transformations. These theories all involve non-standard gravity, and the use of conformal transformations allows one to obtain standard inflationary predictions such as the expansion time-scale, reheating and density perturbations in each case very simply. We also discuss the possibilities of this method to be applied to string theory.

Original languageEnglish (US)
Pages (from-to)252-272
Number of pages21
JournalNuclear Physics, Section B
Issue number1
StatePublished - Sep 3 1990

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