V. Narayanan et M. Sivakumar, ON THE W-ALGEBRA IN THE CALOGERO-SUTHERLAND MODEL USING EXCHANGE OPERATORS, Modern physics letters A, 11(9), 1996, pp. 763-773
We study the W-infinity-algebra in the Calogero-Sutherland model using
the exchange operators. The presence of all the subalgebras of W-infi
nity is shown in this model. A simplified proof for this algebra, in t
he symmetric ordered basis, is given. It is pointed out that the algeb
ra contains in general, nonlinear terms. This shows that the ordinary
W-infinity-algebra is not present in this model. Possibility of the pr
esence of the nonlinear W-infinity-algebra is discussed.