On the Ostrogradsky Ghost and the UV Finite Gravitation

Abstract

In this talk, the speaker will introduce a no-ghost theorem, which is a large class of scalar-tensor theories free from Ostrogradsky ghost. In the framework of ghost free scalar-tensor theories, he will show an example which exhibits the finite gravitation at UV side. The theory is thus power counting renormalisable.

About the program

For more information, please refer to the program website http://iasprogram.ust.hk/particle_theory for details.