959 resultados para Baxter, James Phinney, 1831-1921.


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We study Yang-Baxter deformations of 4D Minkowski spacetime. The Yang-Baxter sigma model description was originally developed for principal chiral models based on a modified classical Yang-Baxter equation. It has been extended to coset curved spaces and models based on the usual classical Yang-Baxter equation. On the other hand, for flat space, there is the obvious problem that the standard bilinear form degenerates if we employ the familiar coset Poincaré group/Lorentz group. Instead we consider a slice of AdS5 by embedding the 4D Poincaré group into the 4D conformal group SO(2, 4) . With this procedure we obtain metrics and B-fields as Yang-Baxter deformations which correspond to well-known configurations such as T-duals of Melvin backgrounds, Hashimoto-Sethi and Spradlin-Takayanagi-Volovich backgrounds, the T-dual of Grant space, pp-waves, and T-duals of dS4 and AdS4. Finally we consider a deformation with a classical r-matrix of Drinfeld-Jimbo type and explicitly derive the associated metric and B-field which we conjecture to correspond to a new integrable system.

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[Rédigé et mis en ordre par Emile Picot] [[Elektronische Ressource]] : Bd. 1

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Boberach: Für den Verfassungsstreit wird darauf hingewiesen, daß unter Beteiligung der Landstände gültige Reformen durchgeführt wurden wie Ablösung bäuerlicher Lasten, Gewerbesteuerermäßigung, Koalitionsfreiheit, Öffentlich- und Mündlichkeit der Strafrechtspflege mit Schwurgerichten, Aufhebung der Polizeigerichtsbarkeit, Mitwirkung der Landstände bei Ernennung von Oberrichtern

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Topik und Semantik der Reden zur Annahme der Berner Verfassung 1831 und 1846 ähneln sich, obwohl die Verfasser konträre politische Ziele verfolgten.