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arxiv: 1503.03150 · v2 · pith:GJUWC7N2new · submitted 2015-03-11 · 🧮 math.SG · math.DG

Dirac operators on quasi-Hamiltonian G-spaces

classification 🧮 math.SG math.DG
keywords g-spacesquasi-hamiltonianbundlediractwistedconstructdevelopenergy
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We develop notions of twisted spinor bundle and twisted pre-quantum bundle on quasi-Hamiltonian G-spaces. The main result of this paper is that we construct a Dirac operator with index given by positive energy representation of loop group. This generalizes the quantization of Hamiltonian $G$-spaces to quasi-Hamiltonian G-spaces.

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