The Poincare' coset models ISO(d-1,1)/R^n and T-duality

Abstract

We generalize a family of Lagrangians with values in the Poincaré group ISO(d-1,1), which contain the description of spinning strings in flat (d-1)+1 dimensions, by including symmetric terms in the world-sheet coordinates. Then, by promoting a subgroup H=R^n, n less than or equal to d, which acts invariantly from the left on the element of ISO(d-1,1), to a gauge symmetry of the action, we obtain a family of sigma-models. They describe bosonic strings moving in (generally) curved, and in some cases degenerate, space-times with an axion field. Further, the space-times of the effective theory admit in general T-dual geometries. We give explicit results for two non degenerate cases.

LaTeX, 24 pages, no figures

References in corpus (5)

• Target Space Duality in String Theory
• Duality, Quotients, and Currents
• Global Analysis of New Gravitational Singularities in String and Particle Theories
• Bosonization and Current Algebra of Spinning Strings
• Space-time singularities and the axion in the Poincare coset models ISO(2,1)/H

Cited by in corpus (2)

• Axion stars in MGD background
• Three dimensional gravity from ISO(2,1) coset models