- #26
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Incidentally, today Thomas Nikolaus and Konrad Waldorf came out with their long-announced discussion of how Hull's T-Folds (a subtle "non-geometric" generalization of perturbative string backgrounds) are realized in the higher differential geometry of higher principal bundles (catgorical bundles) for higher structure group the T-duality 2-group:
Thomas Nikolaus, Konrad Waldorf,
"Higher geometry for non-geometric T-duals"
(arXiv:1804.00677)
Thomas Nikolaus, Konrad Waldorf,
"Higher geometry for non-geometric T-duals"
(arXiv:1804.00677)