Renormalisation of the energy-momentum tensor in scalar field theory using the Wilson flow
Susanne Ehret, Francesco Capponi, Antonio Rago, Luigi Del Debbio, Roberto Pellegrini · Proceedings of The 33rd International Symposium on Lattice Field Theory — PoS(LATTICE 2015) · 2016
A non-perturbative renormalisation prescription for the energy-momentum tensor, based on space-time symmetries along the Wilson flow, has been proposed recently in the context of 4dimensional gauge theories.We extend this construction to the case of a scalar field theory, and investigate its numerical feasibility by studying Ward identities in 3-dimensional scalar field theory.After introducing the Wilson flow for the scalar field theory we discuss its renormalisation properties and the determination of the renormalisation constants for the energy-momentum tensor.