Visualization of Branch Points in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="script">P</mml:mi><mml:mi mathvariant="script">T</mml:mi></mml:math>-Symmetric Waveguides

Klaiman, Shachar; Günther, Uwe; Moiseyev, Nimrod

doi:10.1103/physrevlett.101.080402

Public

Visualization of Branch Points inPT-Symmetric Waveguides

Published in Physical Review Letters • Aug 21, 2008

Authors:

Shachar Klaiman

Uwe Günther

Nimrod Moiseyev

Abstract

The 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-Schrödinger perturbation theory we prove that the spectrum of a PT-symmetric Hamiltonian i...

Subject

Radius of convergence

Visualization

RADIUS

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