Renormalisation of the energy-momentum tensor in scalar field theory using the Wilson flow
Date
2015-12-09Author
Capponi, F
Debbio, LD
Ehret, S
Pellegrini, R
Rago, A
Subject
hep-lat hep-lat
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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 4-dimensional 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.
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Talk presented at the 33rd International Symposium on Lattice Field Theory (Lattice 2015) by Susanne Ehret
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