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Some new exact critical-point amplitudes

H. Chamati·D. M. Danchev·N. S. Tonchev
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Abstract

The scaling properties of the free energy and some of universal amplitudes of a group of models belonging to the universality class of the quantum nonlinear sigma model and the O(n) quantum $ϕ^4$ model in the limit $n\to \infty$ as well as the quantum spherical model, with nearest-neighbor and long-range interactions (decreasing at long distances $r$ as $1/r^{d+σ}$) is presented.

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H. Chamati, D. M. Danchev, N. S. Tonchev. 2000-01-12. Some new exact critical-point amplitudes. https://arxiv.org/abs/cond-mat/0001158

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