Canonical surfaces associated with projectors in grassmannian sigma models

Details Canonical surfaces associated with projectors in grassmannian sigma models Canonical surfaces associated with projectors in grassmannian sigma models

2010-02-15

arxiv.org/abs/1002.2690v1

Physics

Mathematical Physics

Scientific paper

We discuss the construction of higher-dimensional surfaces based on the harmonic maps of $S^2$ into $CP^{N-1}$ and other grassmannians. We show that there are two ways of implementing this procedure - both based on the use of the relevant projectors. We study various properties of such projectors and show that the Gaussian curvature of these surfaces, in general, is not constant. We look in detail at the surfaces corresponding to the Veronese sequence of such maps and show that for all of them this curvature is constant but its value depends on which mapping is used in the construction of the surface.

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