Existence and regularity of solution for a Stochastic CahnHilliard / Allen-Cahn equation with unbounded noise diffusion

Hdl Handle:
http://hdl.handle.net/10034/579313
Title:
Existence and regularity of solution for a Stochastic CahnHilliard / Allen-Cahn equation with unbounded noise diffusion
Authors:
Antonopoulou, Dimitra; Karali, Georgia D.; Millet, Annie
Abstract:
The Cahn-Hilliard/Allen-Cahn equation with noise is a simplified mean field model of stochastic microscopic dynamics associated with adsorption and desorption-spin flip mechanisms in the context of surface processes. For such an equation we consider a multiplicative space-time white noise with diffusion coefficient of linear growth. Applying technics from semigroup theory, we prove local existence and uniqueness in dimensions d = 1,2,3. Moreover, when the diffusion coefficient satisfies a sub-linear growth condition of order α bounded by 1 3, which is the inverse of the polynomial order of the nonlinearity used, we prove for d = 1 global existence of solution. Path regularity of stochastic solution, depending on that of the initial condition, is obtained a.s. up to the explosion time. The path regularity is identical to that proved for the stochastic Cahn-Hilliard equation in the case of bounded noise diffusion. Our results are also valid for the stochastic Cahn-Hilliard equation with unbounded noise diffusion, for which previous results were established only in the framework of a bounded diffusion coefficient. As expected from the theory of parabolic operators in the sense of Petrovsk˘ıı, the bi-Laplacian operator seems to be dominant in the combined model.
Affiliation:
University of Chester
Citation:
Antonopoulou, D. C., Karali, G. D., & Millet, A. (2016). Existence and regularity of solution for a stochastic Cahn-Hilliard/Allen-Cahn equation with unbounded noise diffusion. Journal of Differential Equations, 260(3), 2383--2417. DOI: 10.1016/j.jde.2015.10.004
Publisher:
Elsevier
Journal:
Journal of Differential Equations
Publication Date:
24-Oct-2015
URI:
http://hdl.handle.net/10034/579313
DOI:
10.1016/j.jde.2015.10.004
Type:
Article
Language:
en
ISSN:
0022-0396
Appears in Collections:
Mathematics

Full metadata record

DC FieldValue Language
dc.contributor.authorAntonopoulou, Dimitraen
dc.contributor.authorKarali, Georgia D.en
dc.contributor.authorMillet, Annieen
dc.date.accessioned2015-10-06T12:14:15Zen
dc.date.available2015-10-06T12:14:15Zen
dc.date.issued2015-10-24en
dc.identifier.citationAntonopoulou, D. C., Karali, G. D., & Millet, A. (2016). Existence and regularity of solution for a stochastic Cahn-Hilliard/Allen-Cahn equation with unbounded noise diffusion. Journal of Differential Equations, 260(3), 2383--2417. DOI: 10.1016/j.jde.2015.10.004en
dc.identifier.issn0022-0396en
dc.identifier.doi10.1016/j.jde.2015.10.004en
dc.identifier.urihttp://hdl.handle.net/10034/579313en
dc.description.abstractThe Cahn-Hilliard/Allen-Cahn equation with noise is a simplified mean field model of stochastic microscopic dynamics associated with adsorption and desorption-spin flip mechanisms in the context of surface processes. For such an equation we consider a multiplicative space-time white noise with diffusion coefficient of linear growth. Applying technics from semigroup theory, we prove local existence and uniqueness in dimensions d = 1,2,3. Moreover, when the diffusion coefficient satisfies a sub-linear growth condition of order α bounded by 1 3, which is the inverse of the polynomial order of the nonlinearity used, we prove for d = 1 global existence of solution. Path regularity of stochastic solution, depending on that of the initial condition, is obtained a.s. up to the explosion time. The path regularity is identical to that proved for the stochastic Cahn-Hilliard equation in the case of bounded noise diffusion. Our results are also valid for the stochastic Cahn-Hilliard equation with unbounded noise diffusion, for which previous results were established only in the framework of a bounded diffusion coefficient. As expected from the theory of parabolic operators in the sense of Petrovsk˘ıı, the bi-Laplacian operator seems to be dominant in the combined model.en
dc.language.isoenen
dc.publisherElsevieren
dc.subjectSPDEsen
dc.titleExistence and regularity of solution for a Stochastic CahnHilliard / Allen-Cahn equation with unbounded noise diffusionen
dc.typeArticleen
dc.contributor.departmentUniversity of Chesteren
dc.identifier.journalJournal of Differential Equationsen
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