%0 Conference Paper
%F Oral 
%T Bigravity with single graviton
%+ Laboratoire Charles Coulomb (L2C)
%A Alexandrov, Sergey
%F Invité
%< sans comité de lecture
%Z L2C:19-125
%B the Tenth Alexander Friedmann International Seminar on Gravitation and Cosmology
%C Saint-Petersburg, Russia
%8 2019-06-24
%D 2019
%Z Physics [physics]/High Energy Physics - Theory [hep-th]Conference papers
%X I'll present a new model inspired by ghost-free bigravity. Despite involving two metrics as the usual bigravity models, it describes only one gravitational interaction. Expanded around a large class of backgrounds, the model propagates a single massless graviton. At non-linear level it has 6 additional degrees of freedom, but they contain neither massive graviton, nor the Boulware-Deser ghost. Thus, the model represents an interesting modification of general relativity which might be relevant for cosmology.
%G English
%L hal-02185363
%U https://hal.science/hal-02185363
%~ CNRS
%~ L2C
%~ MIPS
%~ UNIV-MONTPELLIER
%~ UM-2015-2021