Constraints from Inflation on Scalar-Tensor Gravity Theories

Details Constraints from Inflation on Scalar-Tensor Gravity Theories Constraints from Inflation on Scalar-Tensor Gravity Theories

1995-06-23

arxiv.org/abs/gr-qc/9506050v1

Phys.Rev. D52 (1995) 6739-6749

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

LaTeX (with RevTex) 19 pages, 8 uuencoded figures appended, also available on WWW via http://star.maps.susx.ac.uk/index.html

Scientific paper

10.1103/PhysRevD.52.6739

We show how observations of the perturbation spectra produced during inflation may be used to constrain the parameters of general scalar-tensor theories of gravity, which include both an inflaton and dilaton field. An interesting feature of these models is the possibility that the curvature perturbations on super-horizon scales may not be constant due to non-adiabatic perturbations of the two fields. Within a given model, the tilt and relative amplitude of the scalar and tensor perturbation spectra gives constraints on the parameters of the gravity theory, which may be comparable with those from primordial nucleosynthesis and post-Newtonian experiments.

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