PIRSA:09060010 Scientific Series Particle Physics

DOI10.48660/09060010

Series: Particle Physics

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

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

@misc{ pirsa_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},
  year = {2009},
  month = {jun},
  note = {PIRSA:09060010 see, \url{https://pirsa.org}}
}

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.

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