Probing Anomalous Longitudinal Fluctuations of the Interacting Bose Gas via Bose-Einstein Condensation of Magnons

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dc.creatorKreisel, Andreas
dc.creatorHasselmann, Nils
dc.creatorKopietz, Peter
dc.date2006-10-20
dc.date2007-01-09
dc.date.accessioned2026-07-07T07:54:01Z
dc.date.available2026-07-07T07:54:01Z
dc.descriptionThe emergence of a finite staggered magnetization in quantum Heisenberg antiferromagnets subject to a uniform magnetic field can be viewed as Bose-Einstein condensation of magnons. Using non-perturbative results for the infrared behavior of the interacting Bose gas, we present exact results for the staggered spin-spin correlation functions of quantum antiferromagnets in a magnetic field at zero temperature. In particular, we show that in dimensions 1 < D <= 3 the longitudinal dynamic structure factor S_parallel(q,omega) describing staggered spin fluctuations in the direction of the staggered magnetization exhibits a critical continuum whose weight can be controlled experimentally by varying the magnetic field.
dc.description4 pages, 1 figure, revised version. To appear in Physical Review Letters
dc.identifierhttps://arxiv.org/abs/cond-mat/0610575
dc.identifierhttp://arxiv.org/abs/cond-mat/0610575
dc.identifierPhysical Review Letters 98, 067203 (2007)
dc.identifierdoi:10.1103/PhysRevLett.98.067203
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/126442
dc.subjectStatistical Mechanics
dc.subjectStrongly Correlated Electrons
dc.titleProbing Anomalous Longitudinal Fluctuations of the Interacting Bose Gas via Bose-Einstein Condensation of Magnons
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