A VARIATIONAL APPROACH TO DISSIPATIVE SPDES WITH SINGULAR DRIFT

• 成果类型: Article
• 署名作者: Marinelli, Carlo; Scarpa, Luca
• 署名单位: University of London; University College London
• 刊物名称: ANNALS OF PROBABILITY
• ISSN/ISSBN: 0091-1798
• DOI: 10.1214/17-AOP1207
• 发表日期: 2018
• 页码: 1455-1497
• 关键词: Existence; inequalities; EQUATIONS

摘要

We prove global well-posedness for a class of dissipative semilinear stochastic evolution equations with singular drift and multiplicative Wiener noise. In particular, the nonlinear term in the drift is the superposition operator associated to a maximal monotone graph everywhere defined on the real line, on which neither continuity nor growth assumptions are imposed. The hypotheses on the diffusion coefficient are also very general, in the sense that the noise does not need to take values in spaces of continuous, or bounded, functions in space and time. Our approach combines variational techniques with a priori estimates, both pathwise and in expectation, on solutions to regularized equations.