Nonlocal Effective Field Equations for Quantum Cosmology

Abstract

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 $t\sim \xi \sim 1/H$.

9 pages

References in corpus (2)

• Nonlocal Effective Gravitational Field Equations and the Running of Newton's G
• Non-Perturbative Gravity and the Spin of the Lattice Graviton

Cited by in corpus (3)

• Renormalization Group Running of Newton's G: The Static Isotropic Case
• Constraints on Gravitational Scaling Dimensions from Non-Local Effective Field Equations
• Tullio Regge's legacy: Regge calculus and discrete gravity