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PIRSA:13070021

Video URL

https://pirsa.org/13070021

Bimetric theory, Conformal Gravity and Partial Masslessness

Hassan, F. (2013). Bimetric theory, Conformal Gravity and Partial Masslessness. Perimeter Institute for Theoretical Physics. https://pirsa.org/13070021

Fawad Hassan Stockholm University

Talk numberPIRSA:13070021
DOI10.48660/13070021
Source RepositoryPIRSA
Collection
Talk Type Conference

Abstract

Ghost-free bimetric theories can be used to describe  gravitational interactions in the presence of an extra neutral massive
spin-2 field that can modify gravity in non-trivial ways. They also
provide a natural framework for a possible non-linear extension of
partially masslessness known to arise in linear Fierz-Pauli theory.
This talk will describe bimetric theories and a procedure that
identifies a unique bimetric action as a candidate for a nonlinear
partially massless theory. We then show that in the low curvature
limit, the candidate partial massless theory is related to Conformal
Gravity.