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Strong-coupling expansion of lattice O(N) sigma models

Massimo Campostrini·Andrea Pelissetto·Paolo Rossi·Ettore Vicari
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Abstract

We report progress in the computation and analysis of strong-coupling series of two- and three-dimensional ${\rm O}(N)$ $σ$ models. We show that, through a combination of long strong-coupling series and judicious choice of observables, one can compute continuum quantities reliably and with a precision at least comparable with the best available Monte Carlo data.

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Massimo Campostrini, Andrea Pelissetto, Paolo Rossi, Ettore Vicari. 1995-09-12. Strong-coupling expansion of lattice O(N) sigma models. https://doi.org/10.1016/0920-5632(96)00167-3

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