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Equivariant spectral triples on the quantum SU(2) group

Partha Sarathi Chakraborty, +1 more
- 01 Feb 2003 - 
- Vol. 28, Iss: 2, pp 107-126
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TLDR
In this article, the authors characterized all equivariant odd spectral triples for the quantum SU(2) group acting on its L2-space and having a nontrivial Chern character.
Abstract
We characterize all equivariant odd spectral triples for the quantum SU(2) group acting on its L2-space and having a nontrivial Chern character. It is shown that the dimension of an equivariant spectral triple is at least three, and given any element of the K-homology group of SUq(2), there is an equivariant odd spectral triple of dimension 3 inducing that element. The method employed to get equivariant spectral triples in the quantum case is then used for classical SU(2), and we prove that for p<4, there does not exist any equivariant spectral triple with nontrivial K-homology class and dimension p acting on the L2-space.

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The Dirac Operator on SU q (2)

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CYCLIC COHOMOLOGY, QUANTUM GROUP SYMMETRIES AND THE LOCAL INDEX FORMULA FOR SU q (2)

TL;DR: In this paper, the authors analyse the non-commutative space underlying the quantum group symmetries and explain how this naturally leads to the invariant cyclic cohomology in the framework of quantum group symmetry.
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The spectral action for Moyal planes

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Quantum Group of Isometries in Classical and Noncommutative Geometry

TL;DR: In this paper, the authors formulate a quantum generalization of the notion of the group of Riemannian isometries for a compact manifold, by introducing a natural notion of smooth and isometric action by a compact quantum group on a classical or non-commutative manifold described by spectral triples, and then proving the existence of a universal object (called the quantum isometry group) in the category of compact quantum groups acting smoothly and isometrically on a given (possibly non commutative) manifold satisfying certain regularity assumptions.
References
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K-Theory for Operator Algebras

TL;DR: A survey of topological K-theory can be found in this paper, where the authors present a survey of applications to geometry and topology, including the Pimsner-Voiculescu exact sequence and Connes' Thorn isomorphism.
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Twisted SU (2) group. An example of a non-commutative differential calculus

TL;DR: In this paper, a C*-algebre A engendree par deux elements α et γ satisfaisant une relation de commutation simple dependante de ν is presented.
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Quantum deformation of lorentz group

TL;DR: In this article, a one parameter quantum deformation SμL(2,ℂ) of the double group SμU(2) is introduced and an analog of the Iwasawa decomposition is proved.
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