We determine the 2-group structure constants for all the six-dimensional little string theories (LSTs) geometrically engineered in F-theory without frozen singularities. We use this result as a consistency check for T-duality: the 2-groups of a pair of T-dual LSTs have to match. When the T-duality involves a discrete symmetry twist, the 2-group used in the matching is modified. We demonstrate the matching of the 2-groups in several examples.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8550490 | PMC |
http://dx.doi.org/10.1007/s00023-021-01018-3 | DOI Listing |
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