Lattice energy-momentum tensor with Symanzik improved actions

Details Lattice energy-momentum tensor with Symanzik improved actions Lattice energy-momentum tensor with Symanzik improved actions

1995-06-03

arxiv.org/abs/hep-lat/9506008v1

Phys.Rev. D51 (1995) 4494-4502

Physics

High Energy Physics

High Energy Physics - Lattice

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Scientific paper

10.1103/PhysRevD.51.4494

We define the energy-momentum tensor on lattice for the $\lambda \phi^4$ and
for the nonlinear $\sigma$-model Symanzik tree-improved actions, using Ward
identities or an explicit matching procedure. The resulting operators give the
correct one loop scale anomaly, and in the case of the sigma model they can
have applications in Monte Carlo simulations.

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