Premium
Nonminimal Derivative Couplings and Inflation in Generalized Theories of Gravity
Author(s) -
Capozziello S.,
Lambiase G.,
Schmidt H.J.
Publication year - 2000
Publication title -
annalen der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.009
H-Index - 68
eISSN - 1521-3889
pISSN - 0003-3804
DOI - 10.1002/(sici)1521-3889(200001)9:1<39::aid-andp39>3.0.co;2-4
Subject(s) - physics , humanities , philosophy
We study extended theories of gravity where nonminimal derivative couplings of the form R kl ϕ , k ϕ, l are present in the Lagrangian. We show how and why the other couplings of similar structure may be ruled out and then deduce the field equations and the related cosmological models. Finally, we get inflationary solutions which do follow neither from any effective scalar field potential nor from a cosmological constant introduced “by hand”, and we show the de Sitter space‐time to be an attractor solution.