6 papers
Bounding axion dark energy
Gary Shiu, Flavio Tonioni, Hung V. Tran
We study cosmological solutions of (pseudo)scalar theories with periodic potentials, in the presence of arbitrary cosmological fluids -- including a cosmological constant of either…
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.…
Long-lived SEC violation via DM/DE couplings
Gary Shiu, Flavio Tonioni, Hung V. Tran
We discuss a cosmological scenario where an effective violation of the strong energy condition (SEC) is realized through a coupling between SEC-fulfilling dark matter (DM) and dark…
A mechanism for freezing moduli into Minkowski spacetime
Flavio Tonioni
We discuss FLRW-cosmologies with negatively-curved spatial slices that induce a late-time freezing of all the moduli of an effective field theory through Hubble friction, independe…
A distance conjecture beyond moduli?
Cédric Debusschere, Flavio Tonioni, Thomas Van Riet
The distance conjecture states that for theories with moduli coupled to gravity a tower of states becomes light exponentially in the geodesic distance in moduli space. This specifi…
Connecting flux vacua through scalar field excursions
Gary Shiu, Flavio Tonioni, Vincent Van Hemelryck +1
We show how flux vacua that differ from each other in flux quanta can be seen as different vacua in a single scalar potential of an enlarged field space, which resolves the separat…