On the magneto-roton gap and the Laughlin state stability

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dc.creatorde Oca, Alejandro Cabo Montes
dc.date1998-07-06
dc.date.accessioned2026-07-07T03:10:59Z
dc.date.available2026-07-07T03:10:59Z
dc.descriptionIt is argued that the Girvin, MacDonald and Platzman (GMP) evaluation of the magneto-roton spectrum, in spite of probably being a sensible estimate of the excitation spectrum around the real ground state, is not implying the variational stability of the Laughlin state. The suplementary corrections needed to produce a variational calculation around the Laughlin state at 1/3 value of the filling factor are evaluated approximately. The results indicate, within the considered approximation, the existence of lower lying states for a range of wavevector values.
dc.description8 pages, 1 figure
dc.identifierhttps://arxiv.org/abs/cond-mat/9807074
dc.identifierhttp://arxiv.org/abs/cond-mat/9807074
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/28415
dc.subjectMesoscale and Nanoscale Physics
dc.subjectStrongly Correlated Electrons
dc.titleOn the magneto-roton gap and the Laughlin state stability
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