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DTPFI: A stable algorithm for recovering nonlinear energy potentials in phase field systems
[Submitted on 17 Jun 2026] · 2026-06-18 · via cs updates on arXiv.org

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Abstract:This work proposes a Dual Time Phase Field Inversion (DTPFI) method for recovering unknown potential functions in phase field models. The reconstruction is formulated as an optimization problem that minimizes the mismatch between model predictions and observed fields at the final measurement time. We prove the differentiability of the measured field with respect to the unknown potential and establish the local convexity of the regularized objective function, thereby ensuring the existence of a local optimal solution. For numerical implementation, automatic differentiation is employed to compute gradients, avoiding the expensive evaluation of analytic gradients. Extensive numerical experiments demonstrate that DTPFI accurately reconstructs both polynomial and logarithmic potentials and remains robust under measurement noise. The framework is further extended to inverse problems involving field dependent mobility and joint parameter identification in coupled Cahn-Hilliard-Allen-Cahn systems.

Submission history

From: Ni Tianhao [view email]
[v1] Wed, 17 Jun 2026 02:10:09 UTC (6,755 KB)

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