Gravitational Stability and Screening Effect from D Extra Timelike Dimensions
High Energy Physics - Theory
2009-10-31 v3 High Energy Physics - Phenomenology
Abstract
We study (3+1)+D dimensional spacetime, where D extra dimensions are timelike. Compactification of the D timelike dimensions leads to tachyonic Kaluza-Klein gravitons. We calculate the gravitational self-energies of massive spherical bodies due to the tachyonic exchange, discuss their stability, and find that the gravitational force is screened in a certain number of the extra dimensions. We also derive the exact relationship between the Newton constants in the full 4+D dimensional spacetime with the D extra times and the ordinary Newton constant of our 4 dimensional world.
Cite
@article{arxiv.hep-th/0008216,
title = {Gravitational Stability and Screening Effect from D Extra Timelike Dimensions},
author = {Satoshi Matsuda and Shigenori Seki},
journal= {arXiv preprint arXiv:hep-th/0008216},
year = {2009}
}
Comments
harvmac, 20 pages, typos corrected, refs. added and corrected