Semi-classical BMS${}_3$ blocks and flat holography

Abstract

We present the construction of BMS${}_3$ blocks in a two-dimensional field theory and compare the results with holographic computations involving probe particles propagating in flat space cosmologies. On the field theory side, we generalize the monodromy method used in the context of AdS/CFT to theories with BMS symmetry. On the bulk side we consider geodesic Feynman diagrams, recently introduced in [arXiv:1712.07131], evaluated in locally flat geometries generated by backreaction of heavy BMS primary operators. We comment on the implications of these results for the eigenstate thermalization hypothesis in flat holography.

46 pages, 3 figures

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• Field Theories with Conformal Carrollian Symmetry
• Flat space holography and complex SYK
• Flat space physics from AdS/CFT
• Geometric actions and flat space holography
• Entanglement Wedge in Flat Holography and Entanglement Negativity
• Towards the generalized gravitational entropy for spacetimes with non-Lorentz invariant duals
• Balanced Partial Entanglement and Mixed State Correlations
• Local quantum energy conditions in non-Lorentz-invariant quantum field theories
• Intrinsic Approach to $1+1$D Carrollian Conformal Field Theory
• Modular Hamiltonians in flat holography and (W)AdS/WCFT
• Non-Lorentzian Chaos and Cosmological Holography
• On Galilean conformal bootstrap
• Gravitation in flat spacetime from entanglement
• BMS Characters and Modular Invariance
• Logarithmic Celestial Conformal Field Theory
• The Shadow Formalism of Galilean CFT${}_2$
• More on Wilson toroidal networks and torus blocks
• BMS Field Theories and Weyl Anomaly
• BMS Modular Diaries: Torus one-point function
• Reflected entropy in Galilean conformal field theories and flat holography
• Bulk Locality and Asymptotic Causal Diamonds
• Semi-classical BMS-blocks from the Oscillator Construction
• Odd entanglement entropy in Galilean conformal field theories and flat holography
• Correlation functions at the bulk point singularity from the gravitational eikonal S-matrix
• Entanglement Negativity in Flat Holography
• 1/c deformations of AdS${}_3$ boundary conditions and the Dym hierarchy
• Conformal Blocks in 2d Carrollian/Galilean CFTs and Excited State Entanglement Entropy
• Carrollian superconformal theories and super BMS