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arxiv: 1708.01258 · v2 · pith:KF3EJ5NGnew · submitted 2017-08-03 · ✦ hep-th · math-ph· math.CO· math.MP

The Spectrum of Permutation Orbifolds

Christoph A. Keller , Beatrix J. M\"uhlmann This is my paper
classification ✦ hep-th math-phmath.COmath.MP
keywords orbifoldsspectrumpermutationcasescftscomputedescribedifferent
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We study the spectrum of permutation orbifolds of 2d CFTs. We find examples where the light spectrum grows faster than Hagedorn, which is different from known cases such as symmetric orbifolds. We also describe how to compute their partition functions using a generalization of Hecke operators.

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  1. Emergent Closed Universes in Symmetric Orbifold CFTs

    hep-th 2026-06 unverdicted novelty 6.0

    Large N symmetric orbifold CFTs decompose into superselection sectors that behave as closed universes, with each physical sector becoming one-dimensional after gauging, matching gravitational expectations.