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DY: Fachverband Dynamik und Statistische Physik

DY 21: Quantum chaos II

DY 21.10: Talk

Thursday, March 26, 2009, 12:45–13:00, ZEU 255

Exceptional Points in Microcavity Systems — •Jeong-Bo Shim¹, Sang-Bum Lee², Soo-Young Lee², Juhee Yang², Sonky Moon², Kyungwon An², Jai-Hyung Lee², Jungwan Ryu³, and Sang Wook Kim³ — ¹Max-Planck Institute for the Physics of Complex Systems, Nöthnitzer Strasse 38, D-01187, Dresden, Germany — ²School of Physics and Astronomy, Seoul National University, Seoul, 151-742, Korea — ³Department of Physics Education, Pusan National University, Busan, 609-735, Korea

A physical system with multiple interacting modes can generally show the level-repulsion in its spectrum by adjusting a system parameter. In the case that this system is opened, the openness may play a role of the additional parameter, thereby it may show a singular topological structure around the level-repulsion, which is so-called ‘the exceptional point’. In terms of openness and coupling of modes, a chaotic deformed microcavity can be a good example to study about it. In this talk, we will discuss about the observation of the exceptional point in the microcavity spectrum and some relevant phenomena.