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Efficient Linear and Unconditionally Energy Stable Schemes for the Modified Phase Field Crystal Equation

In this paper, we construct efficient schemes based on the scalar auxiliary variable (SAV) block-centered finite difference method for the modified phase field crystal (MPFC) equation, which is a sixth-order nonlinear damped wave equation. The schemes are linear, conserve mass and unconditionally dissipate a pseudo energy. We prove rigorously second-order error estimates in both time and space for the phase field variable in discrete norms. We also present some numerical experiments to verify our theoretical results and demonstrate the robustness and accuracy.

preprint2020arXivOpen access
Xiaoli LiJie Shen
math.NANumerical Analysis
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Xiaoli LiJie Shen

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