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Jack Polynomials in Superspace

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Abstract

This work initiates the study of orthogonal symmetric polynomials in superspace. Here we present two approaches leading to a family of orthogonal polynomials in superspace that generalize the Jack polynomials. The first approach relies on previous work by the authors in which eigenfunctions of the supersymmetric extension of the trigonometric Calogero-Moser-Sutherland Hamiltonian were constructed. Orthogonal eigenfunctions are now obtained by diagonalizing the first nontrivial element of a bosonic tower of commuting conserved charges not containing this Hamiltonian. Quite remarkably, the expansion coefficients of these orthogonal eigenfunctions in the supermonomial basis are stable with respect to the number of variables. The second and more direct approach amounts to symmetrize products of non-symmetric Jack polynomials with monomials in the fermionic variables. This time, the orthogonality is inherited from the orthogonality of the non-symmetric Jack polynomials, and the value of the norm is given explicitly.

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Authors and Affiliations

  1. Département de Physique, de Génie Physique et d’Optique, Université Laval, Québec, Canada, G1K 7P4

    Patrick Desrosiers & Pierre Mathieu

  2. Instituto de Matemática y Física, Universidad de Talca, Casilla 747, Talca, Chile

    Luc Lapointe

Authors
  1. Patrick Desrosiers
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  2. Luc Lapointe
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  3. Pierre Mathieu
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Correspondence to Patrick Desrosiers.

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Communicated by R.H. Dijkgraaf

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Desrosiers, P., Lapointe, L. & Mathieu, P. Jack Polynomials in Superspace. Commun. Math. Phys. 242, 331–360 (2003). https://doi.org/10.1007/s00220-003-0933-2

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  • DOI: https://doi.org/10.1007/s00220-003-0933-2

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