Perturbation theory for O(3) topological charge correlators

Details Perturbation theory for O(3) topological charge correlators Perturbation theory for O(3) topological charge correlators

2005-05-09

arxiv.org/abs/hep-lat/0505004v2

Nucl.Phys. B723 (2005) 234-254

Physics

High Energy Physics

High Energy Physics - Lattice

v1: 27 pages, 7 figures; v2: 28 pages, 8 figures, matches published version

Scientific paper

10.1016/j.nuclphysb.2005.06.022

To check the consistency of positivity requirements for the two-point
correlation function of the topological charge density, which were identified
in a previous paper, we are computing perturbatively this two-point correlation
function in the two-dimensional O(3) model. We find that at the one-loop level
these requirements are fulfilled.

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