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Energy dissipation and free boundary stability of the Stefan problem

  • Filippo Paiano
  • Bozhidar Velichkov
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Abstract

In this paper we prove the stability and the continuity of the free boundaries of two-phase and one-phase weak solutions to the Stefan problem in any dimension. Our proof has two main ingredients. The first one is an energy conservation principle for weak solutions that we derive for general domains in both the one-phase and the two-phase settings; this energy conservation principle provides the modulus of continuity for the displacement of the free boundary and is a flexible tool for analyzing long-time behavior of solutions. The second key ingredient for the control of the displacement of the free boundary is a new lower density bound for the melting region at free boundary points that move with maximal velocity. We also discuss some applications, showing a series of qualitative and quantitative results on the asymptotic behavior of weak solutions.

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Cite

BibTeXRIS
BibTeX
@misc{paiano2026energy,
  title = {{Energy dissipation and free boundary stability of the Stefan problem}},
  author = {Filippo Paiano and Bozhidar Velichkov},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.06267},
  eprint = {2610.06267},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.06267},
}
RIS
TY  - UNPB
TI  - Energy dissipation and free boundary stability of the Stefan problem
AU  - Filippo Paiano
AU  - Bozhidar Velichkov
PY  - 2026
DA  - 2026/10/05
PB  - arXiv
DO  - 10.48550/arxiv.2610.06267
UR  - https://arxiv.org/abs/2610.06267
AB  - In this paper we prove the stability and the continuity of the free boundaries of two-phase and one-phase weak solutions to the Stefan problem in any dimension. Our proof has two main ingredients. The first one is an energy conservation principle for weak solutions that we derive for general domains in both the one-phase and the two-phase settings; this energy conservation principle provides the modulus of continuity for the displacement of the free boundary and is a flexible tool for analyzing long-time behavior of solutions. The second key ingredient for the control of the displacement of the free boundary is a new lower density bound for the melting region at free boundary points that move with maximal velocity. We also discuss some applications, showing a series of qualitative and quantitative results on the asymptotic behavior of weak solutions.
ER  -