643 citations · 8.2k across the 91 of their papers we have counts for
6 papers · 1 filter
State counting on fibered CY-3 folds and the non-Abelian Weak Gravity Conjecture
Cesar Fierro Cota, Albrecht Klemm, Thorsten Schimannek
We extend the dictionary between the BPS spectrum of Heterotic strings and the one of F-/M-theory compactifications on fibered Calabi-Yau 3-folds to cases with higher rank non…
Towards Refining the Topological Strings on Compact Calabi-Yau 3-folds
Min-xin Huang, Sheldon Katz, Albrecht Klemm
We make a proposal for calculating refined Gopakumar-Vafa numbers (GVN) on elliptically fibered Calabi-Yau 3-folds based on refined holomorphic anomaly equations. The key examples…
Analytic Structure of all Loop Banana Amplitudes
Kilian Bönisch, Fabian Fischbach, Albrecht Klemm +2
Using the Gelfand-Kapranov-Zelevinsk\uı system for the primitive cohomology of an infinite series of complete intersection Calabi-Yau manifolds, whose dimension is the loop order m…
Elliptic Blowup Equations for 6d SCFTs. IV: Matters
Jie Gu, Babak Haghighat, Albrecht Klemm +2
Given the recent geometrical classification of 6d SCFTs, a major question is how to compute for this large class their elliptic genera. The latter encode the refined BPS sp…
Lost Chapters in CHL Black Holes: Untwisted Quarter-BPS Dyons in the Model
Fabian Fischbach, Albrecht Klemm, Christoph Nega
Motivated by recent advances in Donaldson-Thomas theory, four-dimensional string-string duality is examined in a reduced rank theory on a less studied BPS sector. I…
The -loop Banana Amplitude from GKZ Systems and relative Calabi-Yau Periods
Albrecht Klemm, Christoph Nega, Reza Safari
We use the GKZ description of periods and certain classes of relative periods on families of Barth-Nieto Calabi-Yau -folds in order to solve the -loop banana amplitudes w…