Physics – Mathematical Physics
Scientific paper
2010-02-15
Physics
Mathematical Physics
15 pages
Scientific paper
In this paper, we provide an invariant formulation of completely integrable $CP^{N-1}$ Euclidean sigma models in two dimensions defined on the Riemann sphere $S^2$. The scaling invariance is explicitly taken into account by expressing all the equations in terms of projection operators. Properties of the projectors mapping onto one-dimensional subspaces are discussed in detail. The paper includes a discussion of surfaces connected with the $CP^{N-1}$ models and the wave functions of their linear spectral problem.
Goldstein P. P.
Grundland Alfred Michel
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