PIRSA:15040102 Conference Cosmology

DOI10.48660/15040102

Conference/School: Superluminality in Effective Field Theories for Cosmology

Berezhiani, L. (2015). Subluminal Vainshtein Screening in Massive Gravity. Perimeter Institute. https://pirsa.org/15040102

Berezhiani, Lasha. Subluminal Vainshtein Screening in Massive Gravity. Perimeter Institute, Apr. 09, 2015, https://pirsa.org/15040102 

@misc{ pirsa_PIRSA:15040102,
  doi = {10.48660/15040102},
  url = {https://pirsa.org/15040102},
  author = {Berezhiani, Lasha},
  keywords = {Cosmology},
  language = {en},
  title = {Subluminal Vainshtein Screening in Massive Gravity},
  publisher = {Perimeter Institute},
  year = {2015},
  month = {apr},
  note = {PIRSA:15040102 see, \url{https://pirsa.org}}
}

Abstract

I will discuss the Vainshtein mechanism in massive gravity. I will show that the spherically symmetric backgrounds that were believed to have superluminal sound speed are in fact unstable. Instead, there is a new class of phenomenologically relevant solutions with stable and subluminal perturbations.

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