$$\underline{p}$$ p ̲ -reduced Multicomponent KP Hierarchy and Classical $$\mathcal {W}$$ W -algebras $$\mathcal {W}(\mathfrak {gl}_N,\underline{p})$$ W ( gl N , p ̲ )

Abstract For each partition $$\underline{p}$$ p ̲ of an integer...

Full description

Bibliographic Details
Main Authors: Carpentier, Sylvain, De Sole, Alberto, Kac, Victor G, Valeri, Daniele, van de Leur, Johan
Other Authors: Massachusetts Institute of Technology. Department of Mathematics
Format: Article
Language:English
Published: Springer Berlin Heidelberg 2021
Online Access:https://hdl.handle.net/1721.1/131852
Description
Summary:Abstract For each partition $$\underline{p}$$ p ̲ of an integer $$N\ge 2$$ N ≥ 2 , consisting of r parts, an integrable hierarchy of Lax type Hamiltonian PDE has been constructed recently by some of us. In the present paper we show that any tau-function of the $$\underline{p}$$ p ̲ -reduced r-component KP hierarchy produces a solution of this integrable hierarchy. Along the way we provide an algorithm for the explicit construction of the generators of the corresponding classical $$\mathcal {W}$$ W -algebra $$\mathcal {W}(\mathfrak {gl}_N,\underline{p})$$ W ( gl N , p ̲ ) , and write down explicit formulas for evolution of these generators along the commuting Hamiltonian flows.