PIRSA:22050020 Scientific Series Quantum Gravity

DOI10.48660/22050020

Series: Quantum Gravity

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

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

@misc{ pirsa_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}}
}

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

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