Year: 2006
Type: article
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) behavior depends on only one adjustable parameter ξ, and the implications for the Robertson–Walker universe are calculated, predicting an accelerated power-law expansion at later times t ~ ξ ~ 1/H.
Source: Modern Physics Letters A
Authors: H. W. HAMBER, R. M. WILLIAMS
Institutions: University of California, Irvine, University of Cambridge
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2095736888