Publications [#4426] of M. Ronen Plesser

Papers Published

1. P.S. Aspinwall and M.R Plesser, T-Duality Can Fail, JHEP, vol. 99 no. 08 (September, 1999), pp. 001, Institute of Physics [9905036]
   (last updated on 2003/01/04)

   Abstract:
   We show that T-duality can be broken by nonperturbative effects in string coupling. The T-duality in question is that of the 2-torus when the heterotic string is compactified on K3 x T2. This case is compared carefully to a situation where T-duality appears to work. A holonomy argument is presented to show that T-dualities (and general U-dualities) should only be expected for large amounts of supersymmetry. This breaking of R <-> 1/R symmetry raises some interesting questions in string theory which we discuss. Finally we discuss how the classical modular group of a 2-torus appears to be broken too.