Unimodular Supergravity
High Energy Physics - Theory
2009-11-07 v4
Abstract
We present the locally supersymmetric formulation of unimodular gravity theory in D (1\le D \le 11) dimensions, namely supergravity theory with the metric tensor whose determinant is constrained to be unity. In such a formulation, the usual fine-tuning of cosmological constant is no longer needed, but its value is understood as an initial condition. Moreover, the zero-ness of the cosmological constant is concluded as the most probable configuration, based on the effective vacuum functional. We also show that the closure of supersymmetry gauge algebra is consistent with the unimodular condition on the metric.
Cite
@article{arxiv.hep-th/0107202,
title = {Unimodular Supergravity},
author = {Hitoshi Nishino and Subhash Rajpoot},
journal= {arXiv preprint arXiv:hep-th/0107202},
year = {2009}
}
Comments
15 pages, latex, new section 7, two new paragraphs in Introduction and Conclusions