SU(N) Coherent States

Details SU(N) Coherent States SU(N) Coherent States

2002-06-02

arxiv.org/abs/quant-ph/0206005v1

J.Math.Phys. 43 (2002) 5351

Physics

Quantum Physics

25 pages, LaTex, no figures

Scientific paper

We generalize Schwinger boson representation of SU(2) algebra to SU(N) and define coherent states of SU(N) using $2(2^{N-1}-1)$ bosonic harmonic oscillator creation and annihilation operators. We give an explicit construction of all (N-1) Casimirs of SU(N) in terms of these creation and annihilation operators. The SU(N) coherent states belonging to any irreducible representations of SU(N) are labelled by the eigenvalues of the Casimir operators and are characterized by (N-1) complex orthonormal vectors describing the SU(N) manifold. The coherent states provide a resolution of identity, satisfy the continuity property, and possess a variety of group theoretic properties.

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