Geometric Phases and Multiple Degeneracies in Harmonic Resonators

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dc.creatorPistolesi, F.
dc.creatorManini, Nicola
dc.date2000-07-04
dc.date.accessioned2026-07-07T12:40:43Z
dc.date.available2026-07-07T12:40:43Z
dc.descriptionIn a recent experiment Lauber et al. have deformed cyclically a microwave resonator and have measured the adiabatic normal-mode wavefunctions for each shape along the path of deformation. The nontrivial observed cyclic phases around a 3-fold degeneracy were accounted for by Manolopoulos and Child within an approximate theory. However, open-path geometrical phases disagree with experiment. By solving exactly the problem, we find unsuspected extra degeneracies around the multiple one that account for the measured phase changes throughout the path. It turns out that proliferation of additional degeneracies around a multiple one is a common feature of quantum mechanics.
dc.description4 pages, 4 figures. Accepted in Phys. Rev. Lett
dc.identifierhttps://arxiv.org/abs/cond-mat/0007047
dc.identifierhttp://arxiv.org/abs/cond-mat/0007047
dc.identifierPhys.Rev.Lett.85:1585-1589,2000
dc.identifierdoi:10.1103/PhysRevLett.85.1585
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/219526
dc.subjectCondensed Matter
dc.subjectQuantum Physics
dc.titleGeometric Phases and Multiple Degeneracies in Harmonic Resonators
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