Perturbative quantum gravity and Newton's law on a flat Robertson-Walker background

We derive the Feynman rules for gravity in the presence of a flat Robertson-Walker background and give explicit expressions for the propagator in the physically interesting cases of inflation, radiation domination, and matter domination. The aforementioned background is generated by a scalar field s...

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Bibliographic Details
Published in:Nuclear physics. B 1998-11, Vol.534 (1), p.419-446
Main Authors: Iliopoulos, J., Tomaras, T.N., Tsamis, N.C., Woodard, R.P.
Format: Article
Language:English
Subjects:
Cosmology
Quantum gravity
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Summary:We derive the Feynman rules for gravity in the presence of a flat Robertson-Walker background and give explicit expressions for the propagator in the physically interesting cases of inflation, radiation domination, and matter domination. The aforementioned background is generated by a scalar field source which should be taken to be dynamical. As an elementary application, we compute the corrections to the Newtonian gravitational force in the present matter dominated era and conclude — as expected — that they are negligible except for the largest scales.
ISSN:0550-3213
1873-1562
DOI:10.1016/S0550-3213(98)00528-8