Open F-branes

Abstract

We include in F-theory, through open Type I F-theory branes (F-branes), string theories with N = 1 supersymmetry, both Type I and heterotic. Type I branes are distinguished from Type II by worldvolume parity projection. The same open Type I branes describe both open Type I superstrings and closed heterotic upon different sectionings from F-branes to worldsheets, while closed Type I superstrings arise from closed Type I branes. (Type II superstrings come from closed Type II branes, as described previously.) F-theory manifests the exceptional-group U-duality symmetry, with all massless bosonic fields in a single gauge coset. This coset branches to the usual bosonic supergravity fields upon sectioning. We examine in detail the simple case of D = 3 F-theory: Parity projection reduces the Type II coset SL(5)/SO(3,2) to the Type I coset SO(3,3)/SO(2,1)2 = SL(4)/SO(2,2).

25 pages, 2 figures; v2: explanations and references added, published in JHEP

References in corpus (9)

• Exceptional Field Theory III: E${}_{8(8)}$
• The Geometry, Branes and Applications of Exceptional Field Theory
• Superspace with manifest T-duality from type II superstring
• Ramond-Ramond gauge fields in superspace with manifest T-duality
• T-duality off shell in 3D Type II superspace
• Gauging Unbroken Symmetries in F-theory
• F-theory superspace backgrounds
• Perturbative F-theory 10-brane and M-theory 5-brane
• F-brane Dynamics