Astrophysical and cosmological considerations on a string dilaton of a least coupling
High Energy Physics - Phenomenology
2011-05-23 v2 High Energy Physics - Theory
Abstract
String-loop effects may generate very weak matter couplings for a (massless) dilaton. We examine limits on the shift of such a dilaton toward its present equilibrium value from big-bang nucleosynthesis and the binary pulsar. On the other hand, the approach of the dilaton toward its present value can be realized in the early universe in a quick and efficient way if an inflationary period is present. We comment briefly on some implications.
Cite
@article{arxiv.hep-ph/9506362,
title = {Astrophysical and cosmological considerations on a string dilaton of a least coupling},
author = {C. E. Vayonakis},
journal= {arXiv preprint arXiv:hep-ph/9506362},
year = {2011}
}
Comments
Revised version to appear in Astropart.Phys., numerical correction of the binary pulsar constraint. 18 pages, latex