Nonlinear Waves Seminar

Event Description: Gregory Beylkin, Department of Applied Mathematics, University of Colorado Boulder ACCURATE EVALUATION OF OSCILLATORY INTEGRALS Ubiquitous in a variety of applications, oscillatory integrals are typically evaluated via asymptotic expansions rather than via quadratures. The obvious reason is that for such integrals the standard quadrature rules are highly inefficient...

Event Description: Angelo Mascarenhas, National Renewable Energy Laboratory (NREL) Golden, Colorado Consequences of Spatial Antisymmetry on Light Light propagation in two and three dimensional lattices for which the index of refraction exhibits spatial antisymmetry is investigated in the ray and photonic crystal regimes. In these regimes, all the two dimensional...

Event Description: Richard Moore , Department of Mathematics, New Jersey Institute of Technology Accounting for radiation in rare events produced by stochastic soliton dynamics Importance sampling using open-loop feedback based on maximum likelihood paths has been demonstrated to improve the efficiency of Monte Carlo estimation of rare event probabilities by...

Tuesday, March 01, 2016 4:00 PM - 5:30 PM Main Campus - Engineering Office Tower - 226: Applied Math Conference Room Baowen Li, Department of Mechanical Engineering , University of Colorado Boulder Phononics: manipulating phonons with electronic analog The discovery of electronic transistor has changed our daily life in many...

Event Description: Willy Hereman , Department of Applied Mathematics and Statistics , Colorado School of Mines Symbolic Computation of Scaling Invariant Lax Pairs in Operator Form for Completely Integrable Systems Based on scaling symmetry properties, a direct method to compute Lax pairs in operator form for completely integrable systems will...

Event Description: Xudan Luo, Hong Kong University of Science and Technology The inverse scattering transform for the nonlocal nonlinear Schrödinger equation with nonzero boundary conditions. The nonlocal nonlinear Schrödinger (NLS) equation was introduced and shown to be integrable. In this talk, the inverse scattering transform for the nonlocal NLS equation...

Patrick Shipman , Department of Mathematics , Colorado State University Topological measures of order for templated pattern-forming systems When the surface of a nominally flat binary material is bombarded with a broad, normally incident ion beam, disordered hexagonal arrays of nanodots can form. Defects, such as dislocations in ripple patterns...

Advances in Nonlinear Spin Waves – Bright Solitons from Repulsive Waves, Dark Soliton Pairs, and Foldover Mingzhong Wu Department of Physics , Colorado State University Date and time: Tuesday, November 17, 2015 - 4:00pm Location: ECOT 226 Abstract: Spin waves in magnetic thin films provide a powerful and versatile test...

Current-induced waves in thin film ferromagnets Ezio Iacocca CU Applied Mathematics and Chalmers University of Technology Date and time: Tuesday, November 3, 2015 - 4:00pm Location: ECOT 226 Abstract: Ferromagnets are intrinsically dynamic materials that exhibit the unusual characteristic of a tangible force originated from quantum effects. Thanks to the...

Two Tales of Nonlinear Wave Motion: Wave Synchronization across a Fluid-Structure Interface and Wave Dispersion under Finite Strain Mahmoud I. Hussein Department of Aerospace Engineering Sciences , University of Colorado Boulder Date and time: Tuesday, October 13, 2015 - 4:00pm Location: ECOT 226 Abstract: Wave motion lies at the heart...