Large-order NSPT for lattice gauge theories with fermions

April 1, 2019
3:00pm to 4:00pm

IFT Seminar Room/Red Room

Theoretical Physics, general interest
Luigi Del Debbio
The University of Edinburgh

IFT Seminar Room/Red Room


Numerical Stochastic Perturbation Theory (NSPT) allows for perturbative computations in quantum field theory. We present an implementation of NSPT that yields results for high orders in the perturbative expansion of lattice gauge theories coupled to fermions. The zero-momentum mode is removed by imposing twisted boundary conditions. We discuss the large-order behaviour of the plaquette, and analyse the consequences for the determination of condensates.