3 papers
hep-th2025
Automorphism-weighted ensembles from TQFT gravity
Ahmed Barbar
We study the recent proposal of arXiv:2405.20366 which poses a precise holographic duality between a 3d TQFT summed over all topologies and a unitary ensemble of boundary 2d CFTs.…
hep-th2025
Holographic description of 4d Maxwell theories and their code-based ensembles
Ahmed Barbar, Anatoly Dymarsky, Alfred Shapere
We formulate a precise holographic duality between an ensemble of 4d Maxwell theories living on a spin four-manifold and an Abelian BF-type 2-form gauge theory of le…
hep-th2025
Global Symmetries, Code Ensembles, and Sums Over Geometries
Ahmed Barbar, Anatoly Dymarsky, Alfred D. Shapere
We consider Abelian topological quantum field theories (TQFTs) in 3d and show that gaugings of invertible global symmetries naturally give rise to additive codes. These codes emerg…