- Centre National de la Recherche ScientifiqueFR550 papers
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- University College LondonGB519 papers
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- The University of TokyoJP352 papers
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- University of SheffieldGB328 papers
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17 papers · 1 filter
Causal structure and diffeomorphismsm in Ashtekar's gravity
Hans-Juergen Matschull
A manifestly diffeomorphism invariant extension of Einstein gravity is constructed, which includes singular metrics, and whose ADM formulation is Ashtekar's gravity. The latter is…
Twisted quantum affine algebras and solutions to the Yang-Baxter equation
Gustav W. Delius, Mark D. Gould, Yao-Zhong Zhang
We construct spectral parameter dependent R-matrices for the quantized enveloping algebras of twisted affine Lie algebras. These give new solutions to the spectral parameter depend…
Non-Perturbative Green's Functions in Theories with Extended Superconformal Symmetry
Paul Howe, P. West
The multiplets that occur in four dimensional rigidly supersymmetric theories can be described either by chiral superfields in Minkowski superspace or analytic superfields in harmo…
Quantum Lie algebras associated to and
Gustav W. Delius, Mark D. Gould, Andreas Hüffmann +1
Quantum Lie algebras $\qlie{g}$ are non-associative algebras which are embedded into the quantized enveloping algebras of Drinfeld and Jimbo in the same way as ordinary Li…
Yangians: their Representations and Characters
Vyjayanthi Chari, Andrew Pressley
We give several formulas for the character of an arbitrary irreducible finite--dimensional representation for the Yangian of sl_2.
The Local Structure of Tilings and their Integer Group of Coinvariants
Johannes Kellendonk
The local structure of a tiling is described in terms of a multiplicative structure on its pattern classes. The groupoid associated to the tiling is derived from this structure and…