The paper “Field theory equivalences as spans of L-infinity algebras“, co-authored by Mehran Jalali Farahani (Heriot-Watt University), Christian Saemann (Heriot-Watt University), and Martin Wolf was published this week in the Journal of Physics A: Mathematical and Theoretical. It is published open access (link here). Keywords are: perturbative quantum field theory, T-duality, homotopy algebras, semi-classical equivalence, and homotopy transfer. The screenshot below shows one of the key theorems.