2007/10/01 by Guillaume Bal, Bal, Guillaume
Computer Science · Engineering · #35J05 #35P20 #35R60 #60H05 #Advanced Mathematical Modeling in Engineering #Advanced Numerical Methods in Computational Mathematics #Analysis of PDEs (math.AP) #Composite Material Mechanics #FOS: Mathematics #Probability (math.PR)
paper · pdf · doi:10.48550/arxiv.0710.0363
openalex publication_date 2007/10/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We consider the perturbation of elliptic operators of the form P(\bx,\bD) by random, rapidly varying, sufficiently mixing, potentials of the form q(\frac\bx\eps,ω). We analyze the source and spectral problems associated to such operators and show that the properly renormalized difference between the perturbed and unperturbed solutions may be written asymptotically as \eps→0 as explicit Gaussian processes. Such results may be seen as central limit corrections to the homogenization (law of large numbers) process. Similar results are derived for more general elliptic equations in one dimension of space. The results are based on the availability of a rapidly converging integral formulation for the perturbed solutions and on the use of classical central limit results for random processes with appropriate mixing conditions.