PIRSA:22050020

Nonvanishing gravitational contribution to matter beta functions for vanishing dimensionful regulators

APA

Pazzini de Brito, G. (2022). Nonvanishing gravitational contribution to matter beta functions for vanishing dimensionful regulators. Perimeter Institute. https://pirsa.org/22050020

MLA

Pazzini de Brito, Gustavo. Nonvanishing gravitational contribution to matter beta functions for vanishing dimensionful regulators. Perimeter Institute, May. 05, 2022, https://pirsa.org/22050020

BibTex

          @misc{ pirsa_22050020,
            doi = {10.48660/22050020},
            url = {https://pirsa.org/22050020},
            author = {Pazzini de Brito, Gustavo},
            keywords = {Quantum Gravity},
            language = {en},
            title = {Nonvanishing gravitational contribution to matter beta functions for vanishing dimensionful regulators},
            publisher = {Perimeter Institute},
            year = {2022},
            month = {may},
            note = {PIRSA:22050020 see, \url{https://pirsa.org}}
          }
          

Gustavo Pazzini de Brito Brazilian Center for Research in Physics (CBPF)

Collection
Talk Type Scientific Series
Subject

Abstract

In this seminar, I will explore the effect of quantum gravity on matter couplings within a (Functional) Renormalization Group framework. I will mainly focus on gravitational contribution to the flow of gauge couplings. In particular, I will focus on results obtained from a class of interpolating regulators that allow us to extract certain universal pieces from non-universal quantities. I will argue that gravity might induce the UV completion of an Abelian-gauge sector, despite an apparent vanishing contribution to its flow when we consider only universal pieces. This result might offer a new perspective on the differences between perturbative studies and Functional Renormalization Group studies.

Zoom Link: https://pitp.zoom.us/j/97277305442?pwd=d240TXhrNnZ0TlErbGQ0bCtGU1NCZz09