Homogenization of the Schrödinger equation and effective mass theorems

G Allaire, A Piatnitski - Communications in mathematical physics, 2005 - Springer
We study the homogenization of a Schrödinger equation with a large periodic potential:
denoting by∈ the period, the potential is scaled as∈− 2. We obtain a rigorous derivation of …

Bloch waves in bubbly crystal near the first band gap: a high-frequency homogenization approach

H Ammari, H Lee, H Zhang - SIAM Journal on Mathematical Analysis, 2019 - SIAM
This paper is concerned with the high-frequency homogenization of bubbly phononic
crystals. It is a follow-up of the work [H. Ammari et al., J. Differential Equations, 263 (2017) …

Homogenization of nonlinear reaction-diffusion equation with a large reaction term

G Allaire, A Piatnitski - ANNALI DELL'UNIVERSITA'DI FERRARA, 2010 - Springer
This paper deals with the homogenization of a second order parabolic operator with a large
nonlinear potential and periodically oscillating coefficients of both spatial and temporal …

Second-order homogenization of periodic Schrödinger operators with highly oscillating potentials

É Cancès, L Garrigue, D Gontier - SIAM Journal on Mathematical Analysis, 2023 - SIAM
We consider a family of-periodic Schrödinger operators with rapidly oscillating potentials on,
where is a Bravais lattice of, the two-scale potential is-periodic with zero mean with respect …

Quantum transport in crystals: effective mass theorem and k· p Hamiltonians

L Barletti, N Ben Abdallah - Communications in mathematical physics, 2011 - Springer
In this paper the effective mass approximation and the k· p multi-band models, describing
quantum evolution of electrons in a crystal lattice, are discussed. Electrons are assumed to …

Diffractive behavior of the wave equation in periodic media: weak convergence analysis

G Allaire, M Palombaro, J Rauch - Annali di Matematica Pura ed Applicata, 2009 - Springer
We study the homogenization and singular perturbation of the wave equation in a periodic
media for long times of the order of the inverse of the period. We consider initial data that are …

Homogenization of periodic non self-adjoint problems with large drift and potential

G Allaire, R Orive - ESAIM: Control, Optimisation and Calculus of …, 2007 - numdam.org
We consider the homogenization of both the parabolic and eigenvalue problems for a
singularly perturbed convection-diffusion equation in a periodic medium. All coefficients of …

Periodic homogenization and effective mass theorems for the Schrödinger equation

G Allaire, A Arnold, P Degond, TY Hou… - … : Modelling, Analysis and …, 2008 - Springer
The goal of this course is to give an introduction to periodic homogenization theory with an
emphasis on applications to Schrödinger equation. We review the formal method of two …

Effective mass theorems for nonlinear Schrödinger equations

C Sparber - SIAM Journal on Applied Mathematics, 2006 - SIAM
We consider time-dependent nonlinear Schrödinger equations subject to smooth lattice-
periodic potentials plus additional confining potentials, slowly varying on the lattice scale …

Homogenization of dispersive material parameters for Maxwell's equations using a singular value decomposition

D Sjöberg - Multiscale Modeling & Simulation, 2005 - SIAM
We find effective, or homogenized, material parameters for Maxwell's equations when the
microscopic scale becomes small compared to the scale induced by the frequencies of the …