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19962008
most citedMass gap in the 2D O(3) non-linear sigma model with a theta=pi term

39 citations · 42 across the 2 of their papers we have counts for

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cond-mat.stat-mech2008★ 3 cited

Numerical Evidence for the Haldane Conjecture

B. Alles, A. Papa

The Haldane conjecture, when applied to the Heisenberg O(3) model with a θterm in two dimensions, states that the correlation length ξdiverges when θapproaches π. To verify this co…

cond-mat.stat-mech2007★ 39 cited

Mass gap in the 2D O(3) non-linear sigma model with a theta=pi term

B. Alles, A. Papa

By analytic continuation to real theta of data obtained from numerical simulation at imaginary theta we study the Haldane conjecture and show that the O(3) non-linear sigma model w…