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Diagrammatic Monte Carlo for the weak-coupling expansion of non-Abelian lattice field theories: Large- N U(N)×U(N) principal chiral model

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Buividovich, P. V. ; Davody, A.
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Date of publication of this fulltext: 20 Mar 2019 13:05


We develop numerical tools for diagrammatic Monte Carlo simulations of non-Abelian lattice field theories in the t'Hooft large-N limit based on the weak-coupling expansion. First, we note that the path integral measure of such theories contributes a bare mass term in the effective action which is proportional to the bare coupling constant. This mass term renders the perturbative expansion ...


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