From Multipartite Entanglement to TQFT

At long distances, a gapped phase of matter is described by a topological quantum field theory (TQFT).

We conjecture a tight and concrete relationship between the genuine $(d+1)$-partite entanglement -- labelled by a $d$-dimensional manifold $M$ -- in the ground state of a $(d-1)+1$-dimensional gapped theory and the partition function of the low energy TQFT on $M$.

Under certain assumptions, the conjecture implies that for $d=3$, the ground state wavefunction can determine the modular tensor category description of the low energy TQFT.

We verify our conjecture for general (2+1)-dimensional Levin-Wen string-net models.