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searching for Non-linear sigma model 4 found (105 total)

Paul Wiegmann (382 words) [view diff] case mismatch in snippet view article find links to article

of quantum integrable systems. He found exact solutions of O(3) Non-linear Sigma Model, (Wiegmann 1985), Wess–Zumino–Witten model (together with Alexander

Édouard Brézin (1,267 words) [view diff] exact match in snippet view article find links to article

in the case of a continuous symmetry break, is described by a non-linear sigma model, leading to a development of critical exponents in powers of the

N-vector model (1,193 words) [view diff] exact match in snippet view article find links to article

later case, this is referred to as the O ( n ) {\displaystyle O(n)} non-linear sigma model, as the rotation group O ( n ) {\displaystyle O(n)} is group of

Germán Sierra (5,133 words) [view diff] exact match in snippet view article find links to article

Haldane's conjecture from spin chains to spin ladders using the O(3) non-linear sigma model. He also investigated phase transitions in staggered spin ladders