On the surfaces associated with $\mathbb{C}P^{N-1}$ models

Details On the surfaces associated with $\mathbb{C}P^{N-1}$ models On the surfaces associated with $\mathbb{C}P^{N-1}$ models

2010-10-29

arxiv.org/abs/1010.6179v2

J.Phys.Conf.Ser.284:012031,2011

Nonlinear Sciences

Exactly Solvable and Integrable Systems

Presented at GROUP28: The XXVIII International Colloquium on Group-Theoretical Methods in Physics, Northumbria University 26-3

Scientific paper

10.1088/1742-6596/284/1/012031

We study certain new properties of 2D surfaces associated with the $\mathbb{C}P^{N-1}$ models and the wave functions of the corresponding linear spectral problem. We show that $su(N)$-valued immersion functions expressed in terms of rank-1 orthogonal projectors are linearly dependent, but they span an $(N-1)$-dimensional subspace of the Lie algebra $su(N)$. Their minimal polynomials are cubic, except for the holomorphic and antiholomorphic solutions, for which they reduce to quadratic trinomials. We also derive the counterparts of these relations for the wave functions of the linear spectral problems. In particular, we provide a relation between the wave functions, which results from the partition of unity into the projectors. Finally, we show that the angle between any two position vectors of the immersion functions, corresponding to the same values of the independent variables, does not depend on those variables.

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