Authors: Peter Bouwknegt Jarah Evslin Varghese Mathai
Publish Date: 2015/04/07
Volume: 337, Issue: 2, Pages: 909-954
Abstract
We introduce spherical Tduality which relates pairs of the form P H consisting of a principal SU2bundle P rightarrow M and a 7cocycle H on P Intuitively spherical Tduality exchanges H with the second Chern class c 2P Unless dimM leq 4 not all pairs admit spherical Tduals and the spherical Tduals are not always unique Nonetheless we prove that all spherical Tdualities induce a degreeshifting isomorphism on the 7twisted cohomologies of the bundles and when dimM leq 7 also their integral twisted cohomologies and when dimM leq 4 even their 7twisted Ktheories While spherical Tduality does not appear to relate equivalent string theories it does provide an identification between conserved charges in certain distinct IIB supergravity and string compactifications
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