3 papers
hep-th2026
New Type IIB Poly-instanton Effects and Axion Quintessence
Luca Caraffi, Federico Carta, Michele Cicoli
Previous studies of poly-instantons in type IIB Calabi-Yau orientifolds found that these effects arise when Euclidean D3-branes wrap rigid cycles with a Wilson line. In this work,…
hep-th2025
On brane systems with O planes -- 5d and 6d SCFTs
Mohammad Akhond, Guillermo Arias-Tamargo, Federico Carta +2
We study Higgs branches of field theories with 8 supercharges in 5 and 6 dimensions, focusing on theories realised on 5-brane webs in Type IIB with an O plane, or a D6-D8-NS5…
hep-th2024
Fuzzy Axions and Associated Relics
Elijah Sheridan, Federico Carta, Naomi Gendler +6
We study fuzzy axion dark matter in type IIB string theory, for axions descending from the Ramond-Ramond four-form in compactifications on orientifolds of Calabi-Yau hypersurfaces.…