Modified gravity with negative and positive powers of curvature: Unification of inflation and cosmic acceleration
Shin’ichi NojiriDepartment of Applied Physics, National Defence Academy, Hashirimizu Yokosuka 239-8686, JapanSergei D. OdintsovDepartment of Applied Physics, National Defence Academy, Hashirimizu Yokosuka 239-8686, Japan
2003en
ABI
Abstract
A modified gravity, which eliminates the need for dark energy and which seems to be stable, is considered. The terms with positive powers of curvature support the inflationary epoch while the terms with negative powers of curvature serve as effective dark energy, supporting current cosmic acceleration. The equivalent scalar-tensor gravity may be compatible with the simplest solar system experiments.
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