737 citations · 5.3k across the 53 of their papers we have counts for
54 papers
Quantum limit to transparency
Angelo Esposito, Alberto Nicolis, Federico Piazza
We argue that no material can be made completely transparent to light as long as it has a nontrivial index of refraction. The quantum decay of photons into phonons is an ineliminab…
Universal CMB Phase Coherence from Single-Field Inflation
Siméon Vareilles, Thomas Colas, Julien Grain +2
The phase coherence of primordial perturbations shapes the acoustic peaks of the CMB and is regarded as a key signature of inflation. Inflationary scenarios at different energy sca…
Scalar wave scattering by black holes embedded in dark matter halos
Shi-Qian Hu, Federico Piazza
We study the scattering of massless scalar waves by static black holes embedded in dark matter halos. The halo is modelled by means of a Hernquist profile, for which the Einstein e…
Remembering George Smoot
John Berliner, Tom Broadhurst, Martin Bucher +31
George Smoot (1945-2025) was a major figure in observational cosmology, particularly through his role in the precision measurement of the CMB dipole and the discovery of the primor…
Subadditive Average Distances and Quantum Promptness
Federico Piazza, Andrew J. Tolley
A central property of a classical geometry is that the geodesic distance between two events is \emph{additive}. When considering quantum fluctuations in the metric or a quantum or…
Constraining the anomalous coupling of gravitational waves with double pulsar
Diego Santos de Jesus, Hermano Velten, Federico Piazza
We revisit the decay of the orbital period in binary systems that occurs due to the emission of gravitational waves in the context of modified gravity models where the coupling $G_…