We show that high-frequency, small-amplitude oscillations of Newtons constant G can dramatically alter cosmology even if the frequency is very high compared to the expansion rate. For example, it is possible to have a spatially flat universe in which dynamical tests of ==(matter density)/(critical density)tests which attempt to directly measure the mass density of the universe obtain values less than unity (==0.10.3, say). The cosmological effects can be obtained in a frequency-amplitude range allowed by all known constraints on G and its time derivative.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)