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On a Cahn-Hilliard/Allen-Cahn system coupled with a type III heat equation and singular potentials. (English) Zbl 1444.35026

The authors consider the Cahn-Hilliard/Allen-Cahn system coupled with the type III heat conduction. In a first step, they obtain several “a priori estimates” that allow them to show the existence of weak solutions in the case of a singular nonlinear term (logarithmic is also included). It is worth saying that thermodynamically relevant functions satisfy the required conditions for the nonlinear term. The approximation to the problem is done by means of a regular approximation to the singular nonlinear term. Uniqueness of solutions is also obtained and the existence of a semigroup is guaranteed. Higher-order regularity results ends the paper. This is a nice paper.

MSC:

35G61 Initial-boundary value problems for systems of nonlinear higher-order PDEs
35B65 Smoothness and regularity of solutions to PDEs
35B45 A priori estimates in context of PDEs
Full Text: DOI

References:

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