Toroidal Orientifolds in IIA with General NS-NS Fluxes

Abstract

Type IIA toroidal orientifolds offer a promising toolkit for model builders, especially when one includes not only the usual fluxes from NS-NS and R-R field strengths, but also fluxes that are T-dual to the NS-NS three-form flux. These new ingredients are known as metric fluxes and non-geometric fluxes, and can help stabilize moduli or can lead to other new features. In this paper we study two approaches to these constructions, by effective field theory or by toroidal fibers twisted over a toroidal base. Each approach leads us to important observations, in particular the presence of D-terms in the four-dimensional effective potential in some cases, and a more subtle treatment of the quantization of the general NS-NS fluxes. Though our methods are general, we illustrate each approach on the example of an orientifold of T^6/Z_4.

59 pages, references added

References in corpus (3)

• On the Topology and Flux of T-Dual Manifolds
• T-duality for principal torus bundles
• Consistent de Sitter String Vacua from Kahler Stabilization and D-term uplifting

Cited by in corpus (8)

• Inflationary Constraints on Type IIA String Theory
• Simple de Sitter Solutions
• The effective theory of type IIA AdS4 compactifications on nilmanifolds and cosets
• On Slow-roll Moduli Inflation in Massive IIA Supergravity with Metric Fluxes
• On the Cosmology of Type IIA Compactifications on SU(3)-structure Manifolds
• D-Terms from Generalized NS-NS Fluxes in Type II
• Non-geometric flux vacua, S-duality and algebraic geometry
• No-scale supersymmetry breaking vacua and soft terms with torsion