BMS modular covariance and structure constants - Archive ouverte HAL
Article Dans Une Revue Journal of High Energy Physics Année : 2023

BMS modular covariance and structure constants

Saikat Mondal
  • Fonction : Auteur
Sanchari Pal
  • Fonction : Auteur
Max Riegler
  • Fonction : Auteur

Résumé

Two-dimensional (2d) field theories invariant under the Bondi-Metzner-Sachs algebra, or 2d BMSFTs in short, are putative holographic duals of Einstein gravity in 3d asymptotically flat spacetimes. When defined on a torus, these field theories come equipped with a modified modular structure. We use the modular covariance of the BMS torus two-point function to develop formulae for different three-point structure constants of the field theory. These structure constants indicate that BMSFTs follow the eigenstate thermalization hypothesis, albeit with some interesting changes to usual 2d CFTs. The singularity structures of the structure constants contain information on perturbations of cosmological horizons in 3d asymptotically flat spacetimes, which we show can also be obtained as a limit of BTZ quasinormal modes.

Dates et versions

hal-04170741 , version 1 (25-07-2023)

Identifiants

Citer

Arjun Bagchi, Saikat Mondal, Sanchari Pal, Max Riegler. BMS modular covariance and structure constants. Journal of High Energy Physics, 2023, 11, pp.087. ⟨10.1007/JHEP11(2023)087⟩. ⟨hal-04170741⟩
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