Speaker
Prof.
Takahiro Tanaka
(Yukawa Insititute for Theoretical Physics)
Description
We discuss graviton oscillations based on the ghost free bi-gravity theory. We point out that this theory possesses a natural cosmological background solution which is very close to the case of general relativity. Furthermore, interesting parameter range of the graviton mass, which can be explored by the observations of gravitational waves, is not at all excluded by the constraint from the solar system tests. Therefore the graviton oscillation with possible inverse chirp signal would be an interesting scientific target of KAGRA, adv LIGO, adv Virgo and GEO.
Author
Prof.
Takahiro Tanaka
(Yukawa Insititute for Theoretical Physics)
Co-authors
Prof.
Antonio De Felice
(The Institute for Fundamental Study, Naresuan University)
Prof.
Takashi Nakamura
(Kyoto University)