4 papers
Large Order Enumerative Geometry, Black Holes and Black Rings
Sergei Alexandrov, Albrecht Klemm, Boris Pioline
Exploiting newly available data on Gopakumar-Vafa invariants at high genus for one-parameter hypergeometric Calabi-Yau threefolds, we study numerically the growth of the 5D indices…
Geometry and Arithmetic of Special Loci in the Moduli Spaces of Type II String Theory
Paul Blesse, Janis Dücker, Albrecht Klemm +1
We use Dwork's deformation method to calculate the Hasse-Weil Zeta function of multi-parameter families of Calabi-Yau three and fourfolds. This information is used to identify subs…
Refined BPS numbers on compact Calabi-Yau threefolds from Wilson loops
Min-xin Huang, Sheldon Katz, Albrecht Klemm +1
We relate the counting of refined BPS numbers on compact elliptically fibred Calabi-Yau threefolds to Wilson loop expectations values in the gauge theories that emerge in vario…
Calabi-Yau Period Geometry and Restricted Moduli in Type II Compactifications
Janis Dücker, Albrecht Klemm, Julian F. Piribauer
The period geometry of Calabi-Yau -folds, characterised by their variations of Hodge structure governed by Griffiths transversality, a graded Frobenius algebra, an integral mono…