https://doi.org/10.1140/epjc/s10052-021-09261-y
Regular Article - Theoretical Physics
Three-dimensional flux vacua from IIB on co-calibrated G2 orientifolds
1
Dipartimento di Fisica e Astronomia “Galileo Galilei”, Università di Padova, Via Marzolo 8, 35131, Padua, Italy
2
INFN, Sezione di Padova, Via Marzolo 8, 35131, Padua, Italy
3
Physics Division, National Technical University of Athens, Zografou Campus, 15780, Athens, Greece
Received:
23
March
2021
Accepted:
17
May
2021
Published online:
26
May
2021
We derive the 3D N = 1 superpotential for the closed string sector of type IIB supergravity on toroidal O5 orientifolds with co-calibrated G2 structure and RR background flux. We find that such compactifications can provide full closed string moduli stabilization on supersymmetric 
vacua, and once we include brane-supersymmetry-breaking we also find indication for the existence of classical 3D de Sitter solutions. The latter however are rather difficult to reconcile with the “shape” moduli stabilization and flux quantization. We also discuss the possibility of achieving scale separation in and 
vacua, but such effects seem to be hindered by the geometric flux quantization.
© The Author(s) 2021
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