On the squashed seven-sphere operator spectrum
Authors: S. Ekhammar, B. E. W. Nilsson
Preprint number: UUITP-24/21
Abstract: We derive major parts of the eigenvalue spectrum of the operators on the squashed seven-sphere that appear in the compactification of eleven-dimensional supergravity. These spectra determine the mass spectrum of the fields in AdS4 and are important for the corresponding N =1 supermultiplet structure. This work is a continuation of the work in  where the complete spectrum of irreducible isometry representations of the fields in AdS4 was derived for this compactification. Some comments are also made concerning the G2 holonomy and its implications on the structure of the operator equations on the squashed seven-sphere.