Nonminimal Derivative Couplings and Inflation in Generalized Theories of Gravity
General Relativity and Quantum Cosmology
2017-10-04 v1
Abstract
We study extended theories of gravity where nonminimal derivative couplings of the form 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.
Keywords
Cite
@article{arxiv.gr-qc/9906051,
title = {Nonminimal Derivative Couplings and Inflation in Generalized Theories of Gravity},
author = {S. Capozziello and G. Lambiase and H. -J. Schmidt},
journal= {arXiv preprint arXiv:gr-qc/9906051},
year = {2017}
}
Comments
11 pages, Latex, to appear in Annals of Physics (Leipzig)