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as a discretization of Virasoro algebra

Ryuji Kemmoku and Satoru Saito

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It is shown that a realization of algebra in the KP hierarchy is equivalent to a difference operator realization of the simplest subalgebra of a q-discretized Virasoro algebra ( D-). To this end, we first introduce the non-commutative flow of the KP hierarchy and see the additional flow corresponds to the element of the algebra. It is then shown that the new flow constructed by use of the additional one can be recognized as an action of D- in the Fock representation of the KP hierarchy.


PACS

02.10.-v Logic, set theory, and algebra

02.30.Tb Operator theory

MSC

37K10 Completely integrable systems, integrability tests, bi-Hamiltonian structures, hierarchies (KdV, KP, Toda, etc.)

81T75 Noncommutative geometry methods (See also 46L85, 46L87, 58B34)

47L40 Limit algebras, subalgebras of C*-algebras

81R10 Infinite-dimensional groups and algebras motivated by physics, including Virasoro, Kac-Moody, W-algebras and other current algebras and their representations (See also 17B65, 17B67, 22E65, 22E67, 22E70)

17B68 Virasoro and related algebras

Subjects

Mathematical physics

Dates

Issue 14 (21 July 1996)

Received 30 June 1995



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