8 papers
Type IIA on Spin(7) manifolds with fluxes
Niccolò Cribiori, Arda Hasar, Thomas Van Riet +1
We initiate a systematic study of compactifications of type II string theory to two dimensions on Ricci-flat spaces with fluxes and sources. We derive universal constraints on such…
A domain wall bound on anti-de Sitter vacua
Niccolò Cribiori, Antonia Paraskevopoulou, Thomas Van Riet
We consider anti-de Sitter flux vacua interpolated by flux-changing domain walls. Demanding that the tension of such a domain wall be above the ultraviolet cutoff of the effective…
Scale-separated vacua with extended supersymmetry
Niccolò Cribiori, Fotis Farakos, Alexandros Zarafonitis
We propose the first examples of scale-separated vacua with extended supersymmetry. They arise as circle compactifications of four-dimensional vacua of massive type IIA supergravit…
Cosmological constraints from UV/IR mixing
Niccolò Cribiori, Flavio Tonioni
Holography and entropy bounds suggest that the ultraviolet (UV) and infrared (IR) cutoffs of gravitational effective theories are related to one another as a form of UV/IR mixing.…
Scale separation, rolling solutions and entropy bounds
David Andriot, Niccolò Cribiori, Thomas Van Riet
We revisit scale separation for compactifications of ten- and eleven-dimensional supergravity. For cosmological solutions rolling down flux-generated potentials, we observe that sc…
Bulk/boundary Modular Quintessence and DESI
Luis A. Anchordoqui, Ignatios Antoniadis, Niccolò Cribiori +4
The latest DESI DR2 results, when combined with other independent cosmological data on the Cosmic Microwave Background and supernovas, suggest a preference for dynamical dark energ…