Recent Progress in Intersecting D-brane Models
Ralph Blumenhagen
TL;DR
This work surveys progress in intersecting D-brane models, focusing on semi-realistic flux compactifications, Gepner-model orientifolds, and the structure of the low-energy effective action. It highlights how fluxes stabilize moduli and yield chiral spectra, how exact CFT constructions at Gepner points generate large ensembles of models, and how the low-energy EFT is governed by $f$, $W$, and $K$, with Yukawa couplings arising from worldsheet instantons. The author also develops a statistical framework to count tadpole-satisfying brane configurations, uncovering correlations between gauge-group rank and generations and illustrating how flux data can shape the landscape. Together, these approaches advance the search for Standard-Model-like vacua in string theory and guide future investigations into Yukawa hierarchies, soft terms, and moduli stabilization.
Abstract
The aim of this article is to review some recent progress in the field of intersecting D-brane models. This includes the construction of chiral, semi-realistic flux compactifications, the systematic study of Gepner model orientifolds, the computation of various terms in the low energy effective action and the investigation of the statistics of solutions to the tadpole cancellation conditions.