Unimodular Supergravity

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.

15 pages, latex, new section 7, two new paragraphs in Introduction and Conclusions

References in corpus (5)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• Cosmology and the Fate of Dilatation Symmetry
• Supernova Limits on the Cosmic Equation of State
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• Off-shell unimodular N=1, d=4 supergravity
• Transverse Symmetry and Spin-3/2 Fields
• Imaginary supergravity or Virial supergravity?
• The Super-Stuckelberg procedure and dS in Pure Supergravity
• A note on unimodular $N=1,d=4$ AdS supergravity
• Stückelberg path to pure de Sitter supergravity
• Unimodular Cosmological Space-times