Dynamics of embedded curves by doubly-nonlocal reaction-diffusion systems

作者：von Brecht James H^*; Blair Ryan

来源：Journal of Physics A-Mathematical and Theoretical, 2017, 50(47): 475203.

DOI：10.1088/1751-8121/aa9109

• reaction-diffusion systems
• knot energy
• distortion
• crossing number
• bending energy

We study a class of nonlocal, energy-driven dynamical models that govern the motion of closed, embedded curves from both an energetic and dynamical perspective. Our energetic results provide a variety of ways to understand physically motivated energetic models in terms of more classical, combinatorial measures of complexity for embedded curves. This line of investigation culminates in a family of complexity bounds that relate a rather broad class of models to a generalized, or weighted, variant of the crossing number. Our dynamic results include global well-posedness of the associated partial differential equations, regularity of equilibria for these flows as well as a more detailed investigation of dynamics near such equilibria. Finally, we explore a few global dynamical properties of these models numerically.

• 出版日期2017-11-24