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Topological properties of three interacting eigenmodes in a non-Hermitian Hamiltonian | | Jung-Wan Ryu
; Soo-Young Lee
; Sang Wook Kim
; | | Date: |
20 Sep 2011 | | Abstract: | We have investigated the topological properties associated with degeneracies
of a non-Hermitian Hamiltonian, called as exceptional points (EPs), in the case
that three modes are interacting with each other. Even though the parametric
evolution of the modes cannot be uniquely determined when encircling more than
two EPs once, we can recover the initial configuration of the modes by
encircling two EPs three times or three EPs twice. The group theoretical
consideration provides some hint on it. We confirm our expectation by
numerically calculating the modes of an open quantum system, two dielectric
microdisks. | | Source: | arXiv, 1109.4216 | | Services: | Forum | Review | PDF | Favorites | |
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