Ground State and Excitations of Spin Chain with Orbital Degeneracy

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dc.creatorLi, You-Quan
dc.creatorMa, Micheal
dc.creatorShi, Da-Ning
dc.creatorZhang, Fu-Chun
dc.date1999-02-19
dc.date1999-11-03
dc.date.accessioned2026-07-07T12:16:43Z
dc.date.available2026-07-07T12:16:43Z
dc.descriptionThe one dimensional Heisenberg model in the presence of orbital degeneracy is studied at the SU(4) symmetric viewpoint by means of Bethe ansatz. Following Sutherland's previous work on an equivalent model, we discuss the ground state and the low-lying excitations more extensively in connection to the spin systems with orbital degeneracy. We show explicitly that the ground state is a SU(4) singlet. We study the degeneracies of the elementary excitations and the spectra of the generalized magnons consisting of these excitations. We also discuss the complex 2-strings in the context of the Bethe ansatz solutions.
dc.descriptionRevtex, 9 pages, 3 figures; typos corrected
dc.identifierhttps://arxiv.org/abs/cond-mat/9902269
dc.identifierhttp://arxiv.org/abs/cond-mat/9902269
dc.identifierPhys.Rev.B60:12781-12787,1999
dc.identifierdoi:10.1103/PhysRevB.60.12781
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/211889
dc.subjectStrongly Correlated Electrons
dc.subjectHigh Energy Physics - Theory
dc.subjectExactly Solvable and Integrable Systems
dc.titleGround State and Excitations of Spin Chain with Orbital Degeneracy
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