Liouville Blocks from Spectral Networks

Abstract

This is part I of a series of papers in which we investigate the role of spectral networks in quantum Liouville theory, with particular emphasis on spectral networks of Fenchel-Nielsen type. In this part, we focus on the computation of $SL(2,\mathbb{C})$ quantum parallel transports on any (punctured) Riemann surface $C$, which in quantum Liouville theory has a well-known prescription through the Moore-Seiberg formalism. Our main achievement is rederiving this prescription through an extension of the $q$-nonabelianisation formalism applied to spectral networks of Fenchel-Nielsen type. One of the spin-offs is a proposal for a quantum version of the NRS proposal.

arXiv commentv2: v1 split into two parts, and replaced with part 1; added references, fixed typos (111 pgs); any feedback is welcome