On type IIB vacua with varying coupling constant

Academic Article


  • We describe type IIB compactifications with varying coupling constant in d=6,7,8,9 dimensions, where part of the ten-dimensional SL(2,Z) symmetry is broken by a background with Gamma_0(n) or Gamma(n) monodromy for n=2,3,4. This extends the known class of F-theory vacua to theories which are dual to heterotic compactifications with reduced rank. On compactifying on a further torus, we obtain a description of the heterotic moduli space of G bundles over elliptically fibered manifolds without vector structure in terms of complex geometries.
  • Authors

  • Berglund, Per
  • Klemm, A
  • Mayr, P
  • Theisen, S
  • Status

    Publication Date

  • October 4, 1999
  • Published In

  • Nuclear Physics B  Journal
  • Keywords

  • CHL strings
  • F-theory
  • Digital Object Identifier (doi)

    Start Page

  • 178
  • End Page

  • 204
  • Volume

  • 558
  • Issue

  • 1-2