We use lattice formulation of φ 4 theory in order to investigate nonperturbative features of its continuum limit in two dimensions. In particular, by means of Monte Carlo calculations, we obtain the critical coupling constant g=μ 2 in the continuum, where g is the unrenormalized coupling. Our final result is g/μ2=11.15±0.06stat±0.03syst.
Monte Carlo determination of the critical coupling inϕ24theory
Bosetti, Paolo;
2015-01-01
Abstract
We use lattice formulation of φ 4 theory in order to investigate nonperturbative features of its continuum limit in two dimensions. In particular, by means of Monte Carlo calculations, we obtain the critical coupling constant g=μ 2 in the continuum, where g is the unrenormalized coupling. Our final result is g/μ2=11.15±0.06stat±0.03syst.File in questo prodotto:
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