**Goffredo Chirco 1,2**


Received: 5 August 2019; Accepted: 4 October 2019; Published: 9 October 2019

**Abstract:** This work is meant as a review summary of a series of recent results concerning the derivation of a *holographic* entanglement entropy formula for generic open spin network states in the group field theory (GFT) approach to quantum gravity. The statistical group-field computation of the Rényi entropy for a bipartite network state for a simple interacting GFT is reviewed, within a recently proposed dictionary between group field theories and random tensor networks, and with an emphasis on the problem of a consistent characterisation of the entanglement entropy in the GFT second quantisation formalism.

**Keywords:** holographic entanglement; quantum gravity; group field theory; random tensor networks; quantum many-body physics; quantum geometry
