This is a short introduction to the study of compactifications of F-theory on elliptic Calabi-Yau threefolds near colliding singularities. In particular we consider the case of non-transversal intersections of the singular fibers.
机构:
Univ Tokyo, Kavli Inst Phys & Math Universe, Kashiwa No Ha 5-1-5, Tokyo 2778583, JapanUniv Tokyo, Kavli Inst Phys & Math Universe, Kashiwa No Ha 5-1-5, Tokyo 2778583, Japan