 99295 F. G\"ohmann, V.E. Korepin
 The Hubbard chain: LiebWu equations and norm of the eigenfunctions
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Aug 7, 99

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Abstract. We argue that the square of the norm of the Hubbard wave function is
proportional to the determinant of a matrix, which is obtained by
linearization of the LiebWu equations around a solution. This means
that in the vicinity of a solution the LiebWu equations are
nondegenerate, if the corresponding wave function is nonzero. We
further derive an action that generates the LiebWu equations and
express our determinant formula for the square of the norm in terms of
the Hessian determinant of this action.
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