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Inverse scattering and the Geroch group

par Katsimpouri, Despoina;Kleinschmidt, Axel ;Virmani, Amitabh
Référence The Journal of high energy physics, 2013, 2, 011
Publication Publié, 2013

Article révisé par les pairs

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Résumé :

We study the integrability of gravity-matter systems in D∈=∈2 spatial dimensions with matter related to a symmetric space G/K using the well-known linear systems of Belinski-Zakharov (BZ) and Breitenlohner-Maison (BM). The linear system of BM makes the group structure of the Geroch group manifest and we analyse the relation of this group structure to the inverse scattering method of the BZ approach in general. Concrete solution generating methods are exhibited in the BM approach in the so-called soliton transformation sector where the analysis becomes purely algebraic. As a novel example we construct the Kerr-NUT solution by solving the appropriate purely algebraic Riemann-Hilbert problem in the BM approach. © 2013 SISSA, Trieste, Italy.