Franca, G. S. [UNESP]Gomes, J. F. [UNESP]Zimerman, Abraham Hirsz [UNESP]2014-05-202014-05-202012-08-01Journal of High Energy Physics. New York: Springer, n. 8, p. 25, 2012.1126-6708http://hdl.handle.net/11449/24058A higher grading affine algebraic construction of integrable hierarchies, containing the Wadati-Konno-Ichikawa (WKI) hierarchy as a particular case, is proposed. We show that a two-component generalization of the Schafer-Wayne short pulse equation arises quite naturally from the first negative flow of the WKI hierarchy. Some novel integrable nonautonomous models are also proposed. The conserved charges, both local and nonlocal, are obtained from the Riccati form of the spectral problem. The loop-soliton solutions of the WKI hierarchy are systematically constructed through gauge followed by reciprocal Backlund transformation, establishing the precise connection between the whole WKI and AKNS hierarchies. The connection between the short pulse equation with the sine-Gordon model is extended to a correspondence between the two-component short pulse equation and the Lund-Regge model.25engIntegrable HierarchiesSolitons Monopoles and InstantonsIntegrable Field TheoriesArtigo10.1007/JHEP08(2012)120WOS:000309883200049Acesso restrito92877760781495518215976645016606