251 citations · 770 across the 12 of their papers we have counts for
12 papers
BRST quantization of the induced gauge theory for the Higgs-branch CFT
Bogdan Stefański
We study Witten's induced gauge theory associated with the D1-D5 Higgs-branch CFT, in which the non-dynamical vector multiplet becomes reanimated by integrating out the funda…
Scattering of D0-branes and Strings
Ashoke Sen, Bogdan Stefański
It has been known for about thirty years that a scattering amplitude involving D0-branes and closed strings suffers from infrared divergences beyond tree level. These divergences a…
Demystifying the Massless Sector in AdS_3 Quantum Spectral Curve
Simon Ekhammar, Nikolay Gromov, Bogdan Stefański
We show that in the asymptotic large-volume limit, the original proposal for Quantum Spectral Curve for AdS3 x S3 x T4 with R-R flux has a wider class of solutions, than studied pr…
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…
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…
Quantum Spectral Curve for AdS/CFT: a proposal
Andrea Cavaglià, Nikolay Gromov, Bogdan Stefański +2
We conjecture the Quantum Spectral Curve equations for string theory on with RR charge and its CFT dual. We show that in the large-length regime,…
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…
Integrability, spin-chains and the AdS3/CFT2 correspondence
O. Ohlsson Sax, B. Stefanski
Building on arXiv:0912.1723, in this paper we investigate the AdS3/CFT2 correspondence using integrability techniques. We present an all-loop Bethe Ansatz (BA) for strings on AdS_3…
Integrability and the AdS(3)/CFT(2) correspondence
A. Babichenko, B. Stefanski, K. Zarembo
We investigate the AdS(3)/CFT(2) correspondence for theories with 16 supercharges using the integrability approach. We construct Green-Schwarz actions for Type IIB strings on AdS(3…
Green-Schwarz action for Type IIA strings on
B. Stefanski
We present the Green-Schwarz action for Type IIA strings on . The action is based on a $\Zop_4$ automorphism of the coset $OSp(4|6)/(SO(1,3)\times SU(3)\times U(1…
Dirichlet Branes on a Calabi-Yau Three-fold Orbifold
B. Stefanski
The D-brane spectrum of a $\Zop_2\times\Zop_2$ Calabi-Yau three-fold orbifold of toroidally compactified Type IIA and Type IIB string theory is analysed systematically. The corresp…
Gravitational Couplings of D-branes and O-planes
B. Stefanski
An explicit calculation is performed to check all the tangent bundle gravitational couplings of Dirichlet branes and Orientifold planes by scattering gravitons with a for…