RPA Equation Embedded into In fi nite - Dimensional Fock Space F ∞
نویسنده
چکیده
To clear up both algebraic and geometric structures for integrable systems derived from selfconsistent field theory, in particular, geometric aspect of the random-phase-approximation (RPA) equation is exhibited on the basis of the viewpoint of symmetry of the evolution equation. The RPA equation for an infinite-dimensional Grassmannian is constructed. c © 2002 MAIK “Nauka/Interperiodica”.
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