Bounds on the mass gap of the ferromagnetic XXZ chain

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dc.creatorNachtergaele, Bruno
dc.date1995-01-20
dc.date.accessioned2026-07-07T09:11:08Z
dc.date.available2026-07-07T09:11:08Z
dc.descriptionWe prove rigorous lower and upper bounds for the mass gap of the ferromagnetic spin 1/2 XXZ chain. The two bounds coincide asymptotically in the Ising limit $Δ\to\infty$. Near the isotropic point, $Δ=1$, the estimates are good enough to determine the critical behaviour of the mass gap unambiguously. The derivation does not rely on exact solutions.
dc.description18 pages, LaTeX, 1 figure as uuencoded compressed Postscript file
dc.identifierhttps://arxiv.org/abs/cond-mat/9501098
dc.identifierhttp://arxiv.org/abs/cond-mat/9501098
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/151575
dc.subjectCondensed Matter
dc.subjectFunctional Analysis
dc.subjectHigh Energy Physics - Theory
dc.titleBounds on the mass gap of the ferromagnetic XXZ chain
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