Aug 8 – 13, 2022
Hörsaalzentrum Poppelsdorf
Europe/Berlin timezone

The de Sitter Instanton from Euclidean Dynamical Triangulations

Aug 10, 2022, 4:50 PM
20m
CP1-HSZ/1st-1.001 - HS5 (CP1-HSZ)

CP1-HSZ/1st-1.001 - HS5

CP1-HSZ

50
Oral Presentation Theoretical Developments and Applications beyond Particle Physics Theoretical Developments

Speaker

Marc Schiffer (Perimeter Institute)

Description

In this talk, I will revisit the emergence of de Sitter space in Euclidean dynamical triangulations (EDT). Working within the semi-classical approximation, it is possible to relate the lattice parameters entering the simulations to the partition function of Euclidean quantum gravity. We verify that the EDT geometries behave semi-classically, and by making contact with the Hawking-Moss instanton solution for the Euclidean partition function, we show how to extract a value of the renormalized Newton coupling from the simulations. I will discuss new ways to extract the necessary quantities from the lattice configurations and present an updated value for the renormalized Newton coupling.

Primary authors

Jack Laiho (Syracuse University) Marc Schiffer (Perimeter Institute) Judah Unmuth-Yockey (Fermilab) Kenneth Ratliff (Syracuse University) Mingwei Dai (Syracuse University) Walter Freeman (Syracuse University)

Presentation materials