Exact regimes of collapsed and extra two-string solutions in the two down-spin sector of the spin-1/2 massive XXZ spin chain

Imoto, Takashi ; Sato, Jun ; Deguchi, Tetsuo

Journal of physics. A, Mathematical and theoretical, 2019-01, Vol.52 (3), p.35203 [Periódico revisado por pares]

IOP Publishing

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