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arXiv · 1512.02851

Renormalisation of the energy-momentum tensor in scalar field theory using the Wilson flow

Francesco Capponi·Luigi Del Debbio·Susanne Ehret·Roberto Pellegrini·Antonio Rago
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Abstract

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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Francesco Capponi, Luigi Del Debbio, Susanne Ehret, Roberto Pellegrini, Antonio Rago. 2015-12-09. Renormalisation of the energy-momentum tensor in scalar field theory using the Wilson flow. https://arxiv.org/abs/1512.02851

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