PIRSA:09060010

Video URL

https://pirsa.org/09060010

Emergent Electroweak Gravity

McElrath, B. (2009). Emergent Electroweak Gravity. Perimeter Institute for Theoretical Physics. https://pirsa.org/09060010

McElrath, Bob. Emergent Electroweak Gravity. Perimeter Institute for Theoretical Physics, Jun. 26, 2009, https://pirsa.org/09060010 

          @misc{ scivideos_PIRSA:09060010,
            doi = {10.48660/09060010},
            url = {https://pirsa.org/09060010},
            author = {McElrath, Bob},
            keywords = {Particle Physics},
            language = {en},
            title = {Emergent Electroweak Gravity},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2009},
            month = {jun},
            note = {PIRSA:09060010 see, \url{https://scivideos.org/index.php/pirsa/09060010}}
          }

Bob McElrath European Organization for Nuclear Research (CERN)

Talk numberPIRSA:09060010
DOI10.48660/09060010
Source RepositoryPIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

The relic neutrino background contains a gapless, spin-2 sound mode, as well as a spin-1 mode if there is a neutrino-antineutrino asymmetry. The self-coupling of the spin-2 mode is given by Z boson exchange in the Standard Model and is parametrically similar to Newton's constant given the expected density of relic neutrinos. I will describe this emergent gravity theory and also describe how emergent theories avoid the Weinberg-Witten theorem, when the constituent degrees of freedom live in a flat Lorentz invariant space.