Quasiscarred modes and their branching behavior at an exceptional point

Details Quasiscarred modes and their branching behavior at an exceptional point Quasiscarred modes and their branching behavior at an exceptional point

2011-03-15

arxiv.org/abs/1103.2853v1

Phys. Rev. E 83, 015203 (2011)

Nonlinear Sciences

Chaotic Dynamics

5 pages, 5 figures

Scientific paper

We study quasiscarring phenomenon and mode branching at an exceptional point (EP) in typically deformed microcavities. It is shown that quasiscarred (QS) modes are dominant in some mode group and their pattern can be understood by short-time ray dynamics near the critical line. As cavity deformation increases, high-Q and low-Q QS modes are branching in an opposite way, at an EP, into two robust mode types showing QS and diamond patterns, respectively. Similar branching behavior can be also found at another EP appearing at a higher deformation. This branching behavior of QS modes has its origin on the fact that an EP is a square-root branch point.

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