On the complementarity of F-theory, orientifolds, and heterotic strings

Academic Article


  • We study F-theory duals of six dimensional heterotic vacua in extreme regions of moduli space where the heterotic string is very strongly coupled. We demonstrate how to use orientifold limits of these F-theory duals to regain a perturbative string description. As an example, we reproduce the spectrum of a $T^4/\ZZ_{4}$ orientifold as an F-theory vacuum with a singular $K3$ fibration. We relate this vacuum to previously studied heterotic $E_8\times E_8$ compactifications on $K3$.
  • Authors

  • Berglund, Per
  • Gimon, E
  • Status

    Publication Date

  • August 10, 1998
  • Published In

  • Nuclear Physics B  Journal
  • Keywords

  • F-theory
  • N = 2 tensionless strings
  • heterotic strings
  • orientifolds
  • small E-8 instantons
  • Digital Object Identifier (doi)

    Start Page

  • 73
  • End Page

  • 103
  • Volume

  • 525
  • Issue

  • 1-2