Hyperspherical harmonics with arbitrary arguments

Details Hyperspherical harmonics with arbitrary arguments Hyperspherical harmonics with arbitrary arguments

2008-07-14

arxiv.org/abs/0807.2128v2

Physics

Mathematical Physics

18 pages, 1 figure

Scientific paper

10.1063/1.3054274

The derivation scheme for hyperspherical harmonics (HSH) with arbitrary arguments is proposed. It is demonstrated that HSH can be presented as the product of HSH corresponding to spaces with lower dimensionality multiplied by the orthogonal (Jacobi or Gegenbauer) polynomial. The relation of HSH to quantum few-body problems is discussed. The explicit expressions for orthonormal HSH in spaces with dimensions from 2 to 6 are given. The important particular cases of four- and six-dimensional spaces are analyzed in detail and explicit expressions for HSH are given for several choices of hyperangles. In the six-dimensional space, HSH representing the kinetic energy operator corresponding to i) the three-body problem in physical space and ii) four-body planar problem are derived.

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