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hep-th2026★ 1 cited
Instabilities in scale-separated Casimir vacua
Miquel Aparici, Ivano Basile, Nicolò Risso
Parametric scale separation is notoriously difficult to achieve in flux compactifications of gravitational effective theories. An appealing alternative to conventional Freund-Rubin…
hep-th2024
Wormholes in the axiverse, and the species scale
Luca Martucci, Nicolò Risso, Alessandro Valenti +1
We analyze a large class of four-dimensional low-energy realizations of the axiverse satisfying various quantum gravity constraints. We propose a novel upper bound…