Advances in Theoretical and Mathematical Physics

$T$-duality for torus bundles with $H$-fluxes via noncommutative topology. II. The high-dimensional case and the $T$-duality group

Varghese Mathai and Jonathan Rosenberg

Full-text: Open access

Abstract

We use noncommutative topology to study T-duality for principal torus bundles with H-flux. We characterize precisely when there is a "classical" T-dual, i.e., a dual bundle with dual H-flux, and when the T-dual must be "nonclassical," that is, a continuous field of noncommutative tori. The duality comes with an isomorphism of twisted $K$-theories, required for matching of D-brane charges, just as in the classical case. The isomorphism of twisted cohomology which one gets in the classical case is replaced in the nonclassical case by an isomorphism of twisted cyclic homology. An important part of the paper contains a detailed analysis of the classifying space for topological T-duality, as well as the T-duality group and its action. The issue of possible nonuniqueness of T-duals can be studied via the action of the T-duality group.

Article information

Source
Adv. Theor. Math. Phys., Volume 10, Number 1 (2006), 123-158.

Dates
First available in Project Euclid: 30 July 2006

Permanent link to this document
https://projecteuclid.org/euclid.atmp/1154236240

Mathematical Reviews number (MathSciNet)
MR2222224

Zentralblatt MATH identifier
1111.81131

Subjects
Primary: 81T30: String and superstring theories; other extended objects (e.g., branes) [See also 83E30]
Secondary: 58Bxx: Infinite-dimensional manifolds 81R60: Noncommutative geometry

Citation

Mathai, Varghese; Rosenberg, Jonathan. $T$-duality for torus bundles with $H$-fluxes via noncommutative topology. II. The high-dimensional case and the $T$-duality group. Adv. Theor. Math. Phys. 10 (2006), no. 1, 123--158. https://projecteuclid.org/euclid.atmp/1154236240


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