Nonlocal Effective Field Equations for Quantum Cosmology

Details Nonlocal Effective Field Equations for Quantum Cosmology Nonlocal Effective Field Equations for Quantum Cosmology

2005-06-29

arxiv.org/abs/gr-qc/0506137v1

Mod.Phys.Lett. A21 (2006) 735-742

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

9 pages

Scientific paper

10.1142/S0217732306019979

The possibility that the strength of gravitational interactions might slowly increase with distance, is explored by formulating a set of effective field equations, which incorporate the gravitational, vacuum-polarization induced, running of Newton's constant $G$. The resulting long distance (or large time) behaviour depends on only one adjustable parameter $\xi$, and the implications for the Robertson-Walker universe are calculated, predicting an accelerated power-law expansion at later times $t \sim \xi \sim 1/H$.

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