English

Stationary Solutions of the Curvature Preserving Flow on Space Curves

Differential Geometry 2021-01-19 v3 Exactly Solvable and Integrable Systems

Abstract

We study a geometric flow on curves, immersed in R3\mathbb{R}^3, that have strictly positive torsion. The evolution equation is given by Xt=1τBX_{t}=\frac{1}{\sqrt{\tau}} \textbf{B} where τ\tau is the torsion and B\textbf{B} is the unit binormal vector. In the case of constant curvature, we find all of the stationary solutions and linearize the PDE for torsion around stationary solutions admitting an explicit formula. Afterwards, we prove the L2(R)L^2(\mathbb{R}) linear stability of the stationary solutions corresponding to helices with constant curvature and constant torsion.

Keywords

Cite

@article{arxiv.2008.03369,
  title  = {Stationary Solutions of the Curvature Preserving Flow on Space Curves},
  author = {Matei P. Coiculescu},
  journal= {arXiv preprint arXiv:2008.03369},
  year   = {2021}
}

Comments

12 pages, 3 figures. We have added a discussion on the linearization of the torsion evolution equation around helix stationary solutions