A new scale in the sky
High Energy Physics - Theory
2008-11-26 v1
Abstract
The existence of a new ultraviolet scale for effective theories with gravity and U(1) gauge fields has recently been conjectured as a possible criterion for distinguishing parts of the swampland from the string landscape. Here we discuss a possible phenomenological signature of this scale, for electromagnetic fields, in astrophysical observations.
Keywords
Cite
@article{arxiv.hep-th/0611227,
title = {A new scale in the sky},
author = {M. Gasperini},
journal= {arXiv preprint arXiv:hep-th/0611227},
year = {2008}
}
Comments
6 pages, 2 figures included with epsfig. Essay written for the 2006 Awards for Essays on Gravitation (Gravity Research Foundation), and awarded with "Honorable Mention". To appear in Int. J Mod. Phys. D (December 2006, Special Issue)