T-duality, Jacobi forms and Witten gerbe modules
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2021
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Han, F.
Mathai, V.
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Advances in Theoretical and Mathematical Physics, 2021; 25(5):1235-1266
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Fei Han and Varghese Mathai
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Abstract
In this paper, we extend the T-duality Hori maps in [3], inducing isomorphisms of twisted cohomologies on T-dual circle bundles, to graded Hori maps and show that they induce isomorphisms of twovariable series of twisted cohomologies on the T-dual circle bundles, preserving Jacobi form properties. The composition of the graded Hori map with its dual is equal to the Euler operator. We also construct Witten gerbe modules arising from gerbe modules and show that their graded twisted Chern characters are Jacobi forms under an anomaly vanishing condition on gerbe modules, thereby giving interesting examples.
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Published 17 June 2022
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