On the stability of gravity in the presence of a non-minimally coupled scalar field

Abstract

We show that Einstein's gravity coupled to a non-minimally coupled scalar field is stable even for high values of the scalar field, when the sign of the Einstein-Hilbert action is reversed. We also discuss inflationary solutions and a possible new mechanism of reheating.

References and some clarifications added; 11 pages, 1 figure; submitted to Physics Letters B

References in corpus (3)

• Scalar-tensor gravity in an accelerating universe
• Superinflation, quintessence, and nonsingular cosmologies
• A crucial ingredient of inflation

Cited by in corpus (7)

• Cosmological model with non-minimally coupled fermionic field
• On the singularities of gravity in the presence of non-minimally coupled scalar fields
• Non-Gaussianities of Single Field Inflation with Non-minimal Coupling
• Model for a Universe described by a non-minimally coupled scalar field and interacting dark matter
• Dynamical equivalence of $f(R)$ gravity in Jordan and Einstein frames
• Accretion of nonminimally coupled scalar fields into black holes
• A note on dualities in Einstein's gravity in the presence of a non-minimally coupled scalar field