POEMS: Propagation des Ondes : Etude Mathématique et Simulationan

Multiscale Methods for Wave Propagation in Materials with Sign-Changing Coefficients

Abstract. From a mathematical perspective, the extraordinary properties of metamaterials are often reflected in the coefficients of the governing partial differential equations. These coefficients may fall outside the assumptions of classical theory, particularly when the effecti...

What Does It Mean for a Star-Shaped 3D Scatterer to Be Small in the Time Domain?

Abstract. In the frequency domain wave scattering problems, obstacles can be effectively replaced by point scatterers as soon as the wavelength of the incident wave exceeds significantly their diameter. The situation is less clear in the time domain, where recent works suggest th...