Jul 15 – 19, 2024
Perimeter Institute for Theoretical Physics
America/Toronto timezone

Generalized disformal Horndeski theories: consistency of matter coupling and cosmological perturbations

Jul 15, 2024, 4:15 PM
15m
PI/1-100 - Theatre (Perimeter Institute for Theoretical Physics)

PI/1-100 - Theatre

Perimeter Institute for Theoretical Physics

190
Contributed Talk Contributed Talks

Speaker

Dr Kazufumi Takahashi (Yukawa Institute for Theoretical Physics, Kyoto University)

Description

Invertible disformal transformations are a useful tool to investigate ghost-free scalar-tensor theories. By performing a higher-derivative generalization of the invertible disformal transformation on Horndeski theories, we construct a novel class of ghost-free scalar-tensor theories, which we dub generalized disformal Horndeski theories. In the talk, I will clarify the basic idea for constructing the invertible disformal transformation with higher derivatives. I will also discuss some aspects of the generalized disformal Horndeski theories, including the consistency of matter coupling and cosmological perturbations.

arXiv reference, if applicable: 2209.02176, 2304.08624
Contact Email [email protected]

Primary author

Dr Kazufumi Takahashi (Yukawa Institute for Theoretical Physics, Kyoto University)

Co-authors

Dr Masato Minamitsuji (University of Lisbon) Prof. Hayato Motohashi (Kogakuin University)

Presentation materials

There are no materials yet.

External references