Duality as a Gauge Symmetry and Topology Change

Details Duality as a Gauge Symmetry and Topology Change Duality as a Gauge Symmetry and Topology Change

1993-10-04

arxiv.org/abs/hep-th/9310016v1

Physics

High Energy Physics

High Energy Physics - Theory

10 pages, RI-153-93

Scientific paper

Duality groups as (spontaneously broken) gauge symmetries for toroidal backgrounds, and their role in ($\infty$-dimensional) underlying string gauge algebras are reviewed. For curved backgrounds, it is shown that there is a duality in the moduli space of WZNW sigma-models, that can be interpreted as a broken gauge symmetry. In particular, this duality relates the backgrounds corresponding to axially gauged abelian cosets, $G/U(1)_a$, to vectorially gauged abelian cosets, $G/U(1)_v$. Finally, topology change in the moduli space of WZNW sigma-models is discussed.

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