PreprintDarboux transforms and spectral curves of constant mean curvature surfaces revisitedEmma Carberry, Katrin Leschke and Franz PeditAbstractWe study the geometric properties of Darboux transforms of constant mean curvature (CMC) surfaces and use these transforms to obtain an algebrogeometric representation of constant mean curvature tori. We find that the space of all Darboux transforms of a CMC torus has a natural subset which is an algebraic curve (called the spectral curve) and that all Darboux transforms represented by points on the spectral curve are themselves CMC tori. The spectral curve obtained using Darboux transforms is not birational to, but has the same normalisation as, the spectral curve obtained using a more traditional integrable systems approach. This paper is available as a pdf (748kB) file.
