Speaker
Dr
Ioannis Lavdas
(LMU)
Description
Motivated by the holographic duality between a certain class of three-dimensional superconformal theories and type IIB Supergravity on anti de-Sitter warped backgrounds, I will present a new mechanism through which the lowest-lying graviton in the four dimensional anti de-Sitter bulk can become slightly massive. This is a string theory embedding of massive anti de-Sitter gravity and it will be shown that it emerges as a special limit of a corresponding bi-gravity theory. The obtained mass formula depends on parameters of the geometry of the warped background as well as from the variation of the dilaton field. The analysis is extended to the study of manifolds which allow for
multiple massive gravitons.
| Abstract type | Contributed Talk |
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Author
Dr
Ioannis Lavdas
(LMU)