Dynamically dominant excitations of string solutions in the spin-1/2 antiferromagnetic Heisenberg chain in magnetic fields

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dc.creatorKohno, Masanori
dc.date2008-12-15
dc.date.accessioned2026-07-07T12:54:40Z
dc.date.available2026-07-07T12:54:40Z
dc.descriptionUsing Bethe-ansatz solutions, we uncover a well-defined continuum in dynamical structure factor $S^{+-}(k,ω)$ of the spin-1/2 antiferromagnetic Heisenberg chain in magnetic fields. It comes from string solutions which continuously connect the mode of the lowest-energy excitations in the zero-field limit and that of bound states of overturned spins from the ferromagnetic state near the saturation field. We confirm the relevance to real materials through comparisons with experimental results.
dc.description4 pages, 5 figures; to appear in Phys. Rev. Lett.
dc.identifierhttps://arxiv.org/abs/0812.2707
dc.identifierhttp://arxiv.org/abs/0812.2707
dc.identifierPhysical Review Letters 102, 037203 (2009)
dc.identifierdoi:10.1103/PhysRevLett.102.037203
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/224017
dc.subjectStrongly Correlated Electrons
dc.subjectStatistical Mechanics
dc.titleDynamically dominant excitations of string solutions in the spin-1/2 antiferromagnetic Heisenberg chain in magnetic fields
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