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Mathieu Moonshine and Symmetry Surfing

Matthias R. Gaberdiel, Christoph A. Keller, Hynek Paul

29/9/16 Published in : arXiv:1609.09302

Mathieu Moonshine, the observation that the Fourier coefficients of the elliptic genus on K3 can be interpreted as dimensions of representations of the Mathieu group M24, has been proven abstractly, but a conceptual understanding in terms of a representation of the Mathieu group on the BPS states, is missing. Some time ago, Taormina and Wendland showed that such an action can be naturally defined on the lowest non-trivial BPS states, using the idea of `symmetry surfing', i.e., by combining the symmetries of different K3 sigma models. In this paper we find non-trivial evidence that this construction can be generalized to all BPS states.

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Controlling charge quantization with quantum fluctuations

Expected Depth of Random Walks on Groups

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