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Basis of symmetric polynomials for many-boson light-front wave functions · Around

2014

Basis of symmetric polynomials for many-boson light-front wave functions

Chabysheva, S. S., Hiller, J. R.

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We provide an algorithm for the construction of orthonormal multivariate polynomials that are symmetric with respect to the interchange of any two coordinates on the unit hypercube and are constrained to the hyperplane where the sum of the coordinates is one.

These polynomials form a basis for the expansion of bosonic light-front momentum-space wave functions, as functions of longitudinal momentum, where momentum conservation guarantees that the fractions are on the interval $[0,1]$ and sum to one.
This generalizes earlier work on three-boson wave functions to wave functions for arbitrarily many identical bosons.
A simple application in two-dimensional $\phi^4$ theory illustrates the use of these polynomials.

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Then

S.S. Chabysheva, B. Elliott, and J.R. Hiller, Phys. Rev. E 88
2013
Later among the works it cites.
I. C. Cloet and C. D. Roberts, Prog. Part. Nucl. Phys. 77
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B. L. G. Bakker et al
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Original
2014
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