141 citations · 2.5k across the 80 of their papers we have counts for
80 papers
Quantum geometry and mock modularity
Sergei Alexandrov, Soheyla Feyzbakhsh, Albrecht Klemm +1
In previous work, we used new mathematical relations between Gopakumar-Vafa (GV) invariants and rank 0 Donaldson-Thomas (DT) invariants to determine the first few terms in the gene…
Quantum geometry, stability and modularity
Sergei Alexandrov, Soheyla Feyzbakhsh, Albrecht Klemm +2
By exploiting new mathematical relations between Pandharipande-Thomas (PT) invariants, closely related to Gopakumar-Vafa (GV) invariants, and rank 0 Donaldson-Thomas (DT) invariant…
D-instanton Induced Superpotential
Sergei Alexandrov, Atakan Hilmi Fırat, Manki Kim +2
We use string field theory to fix the normalization of the D-instanton corrections to the superpotential involving the moduli fields of type II string theory compactified on an ori…
Modular bootstrap for D4-D2-D0 indices on compact Calabi-Yau threefolds
Sergei Alexandrov, Nava Gaddam, Jan Manschot +1
We investigate the modularity constraints on the generating series of BPS indices counting D4-D2-D0 bound states with fixed D4-brane charge in type IIA string theory c…
Euclidean D-branes in Type IIB string theory on Calabi-Yau threefolds
Sergei Alexandrov, Ashoke Sen, Bogdan Stefański
We compute the contribution of Euclidean D-branes in type IIB string theory on Calabi-Yau threefolds to the metric on the hypermultiplet moduli space in the large volume, weak coup…
D-instantons in Type IIA string theory on Calabi-Yau threefolds
Sergei Alexandrov, Ashoke Sen, Bogdan Stefański
Type IIA string theory compactified on a Calabi-Yau threefold has a hypermultiplet moduli space whose metric is known to receive non-perturbative corrections from Euclidean D2-bran…