Sixteenth Marcel Grossmann Meeting

Analytic infinite derivative gravity as the quantum gravity probe

5 Jul 2021, 17:45

30m

Talk in the parallel session Ghost-free models of modified gravity: massive gravity, Horndeski and DHOST theories, other related models; their properties and solutions. Ghost-Free Models of Modified Gravity: Massive Gravity, Horndeski and DHOST Theories, Other Related Models; Their Properties and Solutions.

Speaker

alexey koshelev (universidade da beira interior)

Description

I will discuss the general aspects of the Analytic Infinite Derivative (AID) gravity theories. It will be shown in details why an infinite number of derivatives is required to eradicate ghosts. Explicit ghost-free construction will be presented. Then it will be explained how unitarity is maintained in this non-local setup upon accounting loop corrections. Observational aspects will be briefly touched.