arXiv subjects

Jung-Wan Ryu

Publications and source records attributed to Jung-Wan Ryu.

57 records · Page 4Linked to original sources

arXiv2005

Scarred Resonances and Steady Probability Distribution in a Chaotic Microcavity

We investigate scarred resonances of a stadium-shaped chaotic microcavity. It is shown that two components with different chirality of the scarring pattern are slightly rotated in opposite ways from the underlying unstable periodic orbit, when the incident angles of the scarring pattern are close to the critical angle for total internal reflection. In addition, the correspondence of emission pattern with the scarring pattern disappears when the incident angles are much larger than the critical angle. The steady probability distribution gives a consistent explanation about these interesting phenomena and makes it possible to expect the emission pattern in the latter case.

nlin.CD↗

arXiv2004

Quasi-Scarred Resonances in a Spiral-Shaped Microcavity

We study resonance patterns of a spiral-shaped dielectric microcavity with chaotic ray dynamics. Many resonance patterns of this microcavity, with refractive indices $n=2$ and 3, exhibit strong localization of simple geometric shape, and we call them {\em quasi-scarred resonances} in the sense that there is, unlike the conventional scarring, no underlying periodic orbits. It is shown that the formation of quasi-scarred pattern can be understood in ter ms of ray dynamical probability distributions and wave properties like uncertainty and interference.

nlin.CD↗

arXiv1998

Characteristic Relations of Type-III Intermittency in an Electronic Circuit

It is reported that the characteristic relations of type-II and type-III intermittencies, with respective local Poincar$\acute{e}$ maps of $x_{n+1}= (1+ε)x_n + a x^3_n$ and $x_{n+1}= - (1+ε)x_n - a x^3_n$, are both $- ln (ε)$ under the assumption of uniform reinjection probability. However, the intermittencies have various characteristic relations such as $ε^{-ν}$ ($1/2 \leq ν\leq 1$) depending on the reinjection probability. In this Letters the various characteristic relations are discussed, and the $ε^{-1/2}$ characteristic relation is obtained experimentally in an electronic circuit, with uniform reinjection probability.

chao-dyn↗