# Scale Invariant Theories of Gravity and the Meaning of the Planck Mass

- Institution: CERN
- Department: TH institutes
- Speaker: Roberto Percacci
- Year: 2019
- Language: English
- Subjects: Physics, Astronomy and space
- Source: [CERN](https://videos.cern.ch/record/3001968)
- Licence: [CERN](http://copyright.web.cern.ch)
- Who can watch: Tweens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

I will review metric-affine theories of gravity and the occurrence of a Higgs mechanism that gives mass to the gravitational connection. I will then discuss the possibility of achieving quantum scale invariance at high energy in such theories..

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## Lectures

1. [Scale Invariant Theories of Gravity and the Meaning of the Planck Mass](https://invisiblenetwork.ai/learn/cern/3001968/bc5073cf9b7b), 49 min (CERN's player)