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Article: Ground state and excitations of a spin chain with orbital degeneracy

TitleGround state and excitations of a spin chain with orbital degeneracy
Authors
Issue Date1999
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B - Condensed Matter And Materials Physics, 1999, v. 60 n. 18, p. 12781-12787 How to Cite?
AbstractThe one-dimensional Heisenberg model in the presence of orbital degeneracy is studied at the SU(4) symmetric point 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. ©1999 The American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/174621
ISSN
2001 Impact Factor: 3.07
References

 

DC FieldValueLanguage
dc.contributor.authorLi, YQen_US
dc.contributor.authorMa, Men_US
dc.contributor.authorShi, DNen_US
dc.contributor.authorZhang, FCen_US
dc.date.accessioned2012-11-26T08:46:33Z-
dc.date.available2012-11-26T08:46:33Z-
dc.date.issued1999en_US
dc.identifier.citationPhysical Review B - Condensed Matter And Materials Physics, 1999, v. 60 n. 18, p. 12781-12787en_US
dc.identifier.issn0163-1829en_US
dc.identifier.urihttp://hdl.handle.net/10722/174621-
dc.description.abstractThe one-dimensional Heisenberg model in the presence of orbital degeneracy is studied at the SU(4) symmetric point 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. ©1999 The American Physical Society.en_US
dc.languageengen_US
dc.publisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/en_US
dc.relation.ispartofPhysical Review B - Condensed Matter and Materials Physicsen_US
dc.titleGround state and excitations of a spin chain with orbital degeneracyen_US
dc.typeArticleen_US
dc.identifier.emailZhang, FC: fuchun@hkucc.hku.hken_US
dc.identifier.authorityZhang, FC=rp00840en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0000808019en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0000808019&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume60en_US
dc.identifier.issue18en_US
dc.identifier.spage12781en_US
dc.identifier.epage12787en_US
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridLi, YQ=7502084929en_US
dc.identifier.scopusauthoridMa, M=7202445040en_US
dc.identifier.scopusauthoridShi, DN=7402052276en_US
dc.identifier.scopusauthoridZhang, FC=14012468800en_US

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