Zobrazeno 1 - 10
of 757
pro vyhledávání: '"Alexandrov, Sergei"'
Autor:
Alexandrov, Sergei, Bendriss, Khalil
Generating functions of BPS indices, counting states of D4-D2-D0 black holes in Calabi-Yau compactifications of type IIA string theory and identified with rank 0 Donaldson- Thomas invariants, are examples of mock modular forms. They have a quite comp
Externí odkaz:
http://arxiv.org/abs/2408.16819
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 generating series of Abelian D4-D2-D0 indices for a class of compact one-p
Externí odkaz:
http://arxiv.org/abs/2312.12629
Publikováno v:
JHEP 01 (2024) 141
We compute instanton corrections to the partition function of sine-Liouville (SL) theory, which provides a worldsheet description of two-dimensional string theory in a non-trivial tachyon background. We derive these corrections using a matrix model f
Externí odkaz:
http://arxiv.org/abs/2311.04969
Autor:
Alexandrov, Sergei, Bendriss, Khalil
The metric on the hypermultiplet moduli space of Calabi-Yau compactifications of type II string theory is known to receive D-brane and NS5-brane instanton corrections. We compute explicit expressions for these corrections in the one-instanton approxi
Externí odkaz:
http://arxiv.org/abs/2309.14440
Autor:
Alexandrov, Sergei, Feyzbakhsh, Soheyla, Klemm, Albrecht, Pioline, Boris, Schimannek, Thorsten
By exploiting new mathematical relations between Pandharipande-Thomas (PT) invariants, closely related to Gopakumar-Vafa (GV) invariants, and rank 0 Donaldson-Thomas (DT) invariants counting D4-D2-D0 BPS bound states, we rigorously compute the first
Externí odkaz:
http://arxiv.org/abs/2301.08066
Publikováno v:
JHEP07(2022)090
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 orientifold of a Calabi-Yau threefold in the absence of fluxes. We focus
Externí odkaz:
http://arxiv.org/abs/2204.02981
Publikováno v:
Adv.Theor.Math.Phys. 27 (2023) 3, 683-744
We investigate the modularity constraints on the generating series $h_r(\tau)$ of BPS indices counting D4-D2-D0 bound states with fixed D4-brane charge $r$ in type IIA string theory compactified on complete intersection Calabi-Yau threefolds with $b_
Externí odkaz:
http://arxiv.org/abs/2204.02207
Publikováno v:
In Thin-Walled Structures December 2024 205 Part B
