In the talk, I will discuss the Turner-Turaev formalism for unoriented Topological Quantum Field Theory (TQFT). Building upon this formalism, I will introduce an analogous version of (d+1)-dimensional TQFT for pro-p Poincaré duality groups. In the case of d=1, this enables us to study cobordisms and TQFTs for both the maximal pro-p quotient of absolute Galois groups of p-adic fields and pro-p completions of fundamental groups of surfaces. This generalisation gives a framework for arithmetic TQFTs and strengthens the analogies within arithmetic topology, which relates p-adic fields to surfaces (oriented mod p^r). I will also provide an outline of the classification of such TQFTs for d=1, in terms of Frobenius algebras with some extra structure. The talk is based on joint work with Oren Ben-Bassat.
Math-Physics Joint Seminar
Thursday, February 29, 2024 - 3:30pm
Nadav Gropper
University of Haifa and University of Pennsylvania