He, Jingsong, Li, Yinghua and Cheng, Yi (2006) q-Deformed KP Hierarchy and q-Deformed Constrained KP Hierarchy. SYMMETRY INTEGRABILITY AND GEOMETRY-METHODS AND APPLICATIONS, 2 . -. doi:10.3842/SIGMA.2006.060 ISSN 1815-0659.

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Abstract

Using the determinant representation of gauge transformation operator, we have shown that the general form of tau function of the q-KP hierarchy is a q-deformed generalized Wronskian, which includes the q-deformed Wronskian as a special case. On the basis of these, we study the q-deformed constrained KP (q-cKP) hierarchy, i.e. l-constraints of q-KP hierarchy. Similar to the ordinary constrained KP (cKP) hierarchy, a large class of solutions of q-cKP hierarchy can be represented by q-deformed Wronskian determinant of functions satisfying a set of linear q-partial differential equations with constant coefficients. We obtained additional conditions for these functions imposed by the constraints. In particular, the effects of q-deformation (q-effects) in single q-soliton from the simplest tau function of the q-KP hierarchy and in multi-q-soliton from one-component q-cKP hierarchy, and their dependence of x and q, were also presented. Finally, we observe that q-soliton tends to the usual soliton of the KP equation when x -> 0 and q -> 1, simultaneously.

Item Type:	Journal Article
Subjects:	Q Science > QC Physics
Journal or Publication Title:	SYMMETRY INTEGRABILITY AND GEOMETRY-METHODS AND APPLICATIONS
Publisher:	NATL ACAD SCI UKRAINE, INST MATH
ISSN:	1815-0659
Official Date:	2006
Dates:	Date Event 2006 UNSPECIFIED
Volume:	2
Number of Pages:	32
Page Range:	-
DOI:	10.3842/SIGMA.2006.060
Publication Status:	Published

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