Visualization of Branch Points in PT-Symmetric Waveguides

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dc.creatorKlaiman, Shachar
dc.creatorMoiseyev, Nimrod
dc.creatorGunther, Uwe
dc.date2008-02-18
dc.date.accessioned2026-07-07T11:44:47Z
dc.date.available2026-07-07T11:44:47Z
dc.descriptionThe visualization of an exceptional point in a PT symmetric directional coupler(DC) is demonstrated. In such a system the exceptional point can be probed by varying only a single parameter. Using the Rayleigh-Schroedinger perturbation theory we prove that the spectrum of a PT symmetric Hamiltonian is real as long as the radius of convergence has not been reached. We also show how one can use a PT symmetric DC to measure the radius of convergence for non PT symmetric structures. For such systems the physical meaning of the rather mathematical term: radius of convergence, is exemplified.
dc.identifierhttps://arxiv.org/abs/0802.2457
dc.identifierhttp://arxiv.org/abs/0802.2457
dc.identifierPhys.Rev.Lett.101:080402,2008
dc.identifierdoi:10.1103/PhysRevLett.101.080402
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/201672
dc.subjectQuantum Physics
dc.titleVisualization of Branch Points in PT-Symmetric Waveguides
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