The τ functions of the AKS hierarchy and twistor correspondence

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Adler-Kostant-Symes scheme provides a geometrical method for constructing different integrable systems. We construct an AKS hierarchy and obtain the τ function solutions of this hierarchy. We also show that this AKS hierarchy is a reduction of self dual Yang-Mills (SDYM) equation hierarchy and discuss its twistor construction. Hence we re-establish once again that SDYM hierarchy is a universal integrable hierarchy, so that by appropriate reduction and suitable choice of gauge group this hierarchy produces all the well-known hierarchies of the soliton equations 1.

Original languageBritish English
Pages (from-to)981-999
Number of pages19
JournalReviews in Mathematical Physics
Issue number8
StatePublished - 1999


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