Longtime asymptotics of the two-dimensional parabolic Anderson model with white-noise potential

نویسندگان

چکیده

Nous considérons le modèle parabolique d’Anderson (PAM) ∂tu=12Δu+ξu dans R2 avec un potentiel de bruit blanc ξ en espace. prouvons que comportement asymptotique presque sûr la masse totale U(t) au temps t est donnée par logU(t)∼χtlogt pour t→∞, une constante déterministe χ nous identifions à l’aide d’une formule variationnelle. Cette a déjà été utilisée, travail antérieur l’un des auteurs, décrire λ1(Qt)∼χlogt valeur propre principale λ1(Qt) l’opérateur muni conditions aux limites Dirichlet sur boîte Qt=[−t2,t2]2.

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ژورنال

عنوان ژورنال: Annales de l'I.H.P

سال: 2022

ISSN: ['0246-0203', '1778-7017']

DOI: https://doi.org/10.1214/21-aihp1215