paper

Observables of boundary RG flows from string field theory

arXiv:2510.07155

Abstract

We present simple explicit formulae for the change of the -function, boundary state, boundary spectrum and structure constants between the endpoints of short boundary RG flows at next-to-leading order. The formulae are derived using open string field theory and tested on integrable RG flows between conformal boundary states in unitary Virasoro minimal models.

79 pages, no figures

Observables of boundary RG flows from string field theory · wovepaper