Sato theory on the $q$-Toda hierarchy and its extension

Abstract

In this paper, we construct the Sato theory including the Hirota bilinear equations and tau function of a new $q$-deformed Toda hierarchy(QTH). Meanwhile the Block type additional symmetry and bi-Hamiltonian structure of this hierarchy are given. From Hamiltonian tau symmetry, we give another definition of tau function of this hierarchy. Afterwards, we extend the $q$-Toda hierarchy to an extended $q$-Toda hierarchy(EQTH) which satisfy a generalized Hirota quadratic equation in terms of generalized vertex operators. The Hirota quadratic equation might have further application in Gromov-Witten theory. The corresponding Sato theory including multi-fold Darboux transformations of this extended hierarchy is also constructed. At last, we construct the multicomponent extension of the $q$-Toda hierarchy and show the integrability including its bi-Hamiltonian structure, tau symmetry and conserved densities.

28 Pages. arXiv admin note: substantial text overlap with arXiv:1403.0684

References in corpus (7)

• Rogue waves of the Hirota and the Maxwell-Bloch equations
• The Extended Bigraded Toda hierarchy
• q-Deformed KP Hierarchy and q-Deformed Constrained KP Hierarchy
• Solutions of bigraded Toda hierarchy
• On the extended multi-component Toda hierarchy
• Quantum Torus symmetry of the KP, KdV and BKP hierarchies
• String Equations of the q-KP Hierarchy

Cited by in corpus (1)

• Integrability on generalized $q$-Toda equation and hierarchy