Spherical harmonics and integration in superspace II

Details Spherical harmonics and integration in superspace II Spherical harmonics and integration in superspace II

2009-05-13

arxiv.org/abs/0905.2092v1

Physics

Mathematical Physics

18 pages, accepted for publication in J. Phys. A

Scientific paper

The study of spherical harmonics in superspace, introduced in [J. Phys. A: Math. Theor. 40 (2007) 7193-7212], is further elaborated. A detailed description of spherical harmonics of degree k is given in terms of bosonic and fermionic pieces, which also determines the irreducible pieces under the action of SO(m) x Sp(2n). In the second part of the paper, this decomposition is used to describe all possible integrations over the supersphere. It is then shown that only one possibility yields the orthogonality of spherical harmonics of different degree. This is the so-called Pizzetti-integral of which it was shown in [J. Phys. A: Math. Theor. 40 (2007) 7193-7212] that it leads to the Berezin integral.

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