Decay of quasiparticles in quantum spin liquids

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dc.creatorZhitomirsky, M. E.
dc.date2006-01-18
dc.date.accessioned2026-07-07T06:57:38Z
dc.date.available2026-07-07T06:57:38Z
dc.descriptionMagnetic excitations are studied in gapped quantum spin systems, for which spontaneous two-magnon decays are allowed by symmetry. Interaction between one- and two-particle states acquires nonanalytic frequency and momentum dependence near the boundary of two-magnon continuum. This leads to a termination point of single-particle branch for one-dimensional systems and to strong suppression of quasiparticle weight in two dimensions. The momentum dependence of the decay rate is calculated in arbitrary dimensions and effect of external magnetic field is discussed.
dc.description4 pages, 2 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0601405
dc.identifierhttp://arxiv.org/abs/cond-mat/0601405
dc.identifierPhys. Rev. B 73, 100404 (2006)
dc.identifierdoi:10.1103/PhysRevB.73.100404
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/107044
dc.subjectStrongly Correlated Electrons
dc.titleDecay of quasiparticles in quantum spin liquids
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