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Twisted equivariant K-theory with complex coefficients

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abstract

Using a global version of the equivariant Chern character, we describe the complexified twisted equivariant K-theory of a space with a compact Lie group action in terms of fixed-point data. We apply this to the case of a compact Lie group acting on itself by conjugation, and relate the result to the Verlinde algebra and to the Kac numerator at q=1. Verlinde's formula is also discussed in this context.

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quant-ph 1

years

2023 1

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UNVERDICTED 1

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Quantum and Reality

quant-ph · 2023-11-18 · unverdicted · novelty 7.0

Hermitian forms on Hilbert spaces arise from the monoid structure of complex conjugation in Z/2-equivariant real linear types within LHoTT, requiring only a negative unit term.

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  • Quantum and Reality quant-ph · 2023-11-18 · unverdicted · none · ref 16 · internal anchor

    Hermitian forms on Hilbert spaces arise from the monoid structure of complex conjugation in Z/2-equivariant real linear types within LHoTT, requiring only a negative unit term.