Differential geometry of surfaces and Heisenberg ferromagnets

Integrable Isotropic Geometrical Flows and Heisenberg Ferromagnets

Geometrical flows (GF) play an important role in modern mathematics and physics. In this letter we have considered some integrable isotropic GF -- Ricci flows (RF) and mean curvature flows (MCF) -- which are related with integrable Heisenberg ferromagnets. In 2+1 dimensions, these GF have a singularity at $t=t_{0}$.