Tensor renormalization group yields central charge c = 1.97(9) and critical exponents nu = 0.512(15), z = 1.96(6) for the (1+1)d O(3) sigma model, matching theory.
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Tensor renormalization group study of (1+1)-dimensional O(3) nonlinear sigma model with and without finite chemical potential
Tensor renormalization group yields central charge c = 1.97(9) and critical exponents nu = 0.512(15), z = 1.96(6) for the (1+1)d O(3) sigma model, matching theory.