Various Facets of Spacetime Foam
Abstract
Spacetime foam manifests itself in a variety of ways. It has some attributes of a turbulent fluid. It is the source of the holographic principle. Cosmologically it may play a role in explaining why the energy density has the critical value, why dark energy/matter exists, and why the effective dynamical cosmological constant has the value as observed. Astrophysically the physics of spacetime foam helps to elucidate why the critical acceleration in modified Newtonian dynamics has the observed value; and it provides a possible connection between global physics and local galactic dynamics involving the phenomenon of flat rotation curves of galaxies and the observed Tully-Fisher relation. Spacetime foam physics also sheds light on nonlocal gravitational dynamics.
Cite
@article{arxiv.1102.4109,
title = {Various Facets of Spacetime Foam},
author = {Y. Jack Ng},
journal= {arXiv preprint arXiv:1102.4109},
year = {2011}
}
Comments
16 pages, PDFLaTeX; to appear in the Proceedings of the Third Conference on Time and Matter, edited by Martin O'Loughlin et al