120 citations · 431 across the 22 of their papers we have counts for
5 papers · 1 filter
Vortex Strings and Nonabelian sine-Gordon Theories
Q-Han Park, H. J. Shin
We generalize the Lund-Regge model for vortex string dynamics in 4-dimensional Minkowski space to the arbitrary n-dimensional case. The n-dimensional vortex equation is identified…
Vortex String Dynamics in an External Antisymmetric Tensor Field
K. Lee, Q-Han Park, H. J. Shin
We study the Lund-Regge equation that governs the motion of strings in a constant background antisymmetric tensor field by using the duality between the Lund-Regge equation and the…
Painlevé analysis of the coupled nonlinear Schrödinger equation for polarized optical waves in an isotropic medium
Q-Han Park, H. J. Shin
Using the Painlevé analysis, we investigate the integrability properties of a system of two coupled nonlinear Schrödinger equations that describe the propagation of orthogonally po…
Conservation Laws in Higher-Order Nonlinear Optical Effects
Jongbae Kim, Q-Han Park, H. J. Shin
Conservation laws of the nonlinear Schrödinger equation are studied in the presence of higher-order nonlinear optical effects including the third-order dispersion and the self-stee…
Complex sine-Gordon Equation in Coherent Optical Pulse Propagation
Q-Han Park, H. J. Shin
It is shown that the McCall-Hahn theory of self-induced transparency in coherent optical pulse propagation can be identified with the complex sine-Gordon theory in the sharp line l…