From the 1 of 8 linked papers with an AI index.
8 papers
Probing Flavour Deconstruction via Primordial Gravitational Waves
Noemi Fabri, Gino Isidori, Davide Racco
The paper investigates how extensions of the Standard Model based on Flavour Deconstruction can generate primordial gravitational waves through strong first-order phase transitions…
Cosmological History of Flavour Deconstruction Models: Constraints from Monopole Production
Marko Pesut, Davide Racco, Yunlong Zhao
We highlight a generic connection between extensions of the Standard Model featuring low-scale semi-simple embeddings of and the phenomenology of magnetic mono…
Isocurvature Constraints on Dark Matter from Evaporated Primordial Black Holes
G. Franciolini, D. Racco
We revisit the scenario in which stable particles of a dark sector are produced through the complete evaporation of light primordial black holes (PBHs) formed in the early Universe…
Revisiting Isocurvature Bounds on the Minimal QCD Axion
Peter W. Graham, Davide Racco
The QCD axion has important connections to early universe cosmology. For example, it is often said that isocurvature limits rule out a combination of high axion decay constant, $f_…
Impact of Supercooling on Direct Searches for Dark Matter and Gravitational Wave Backgrounds
Davide Racco, Alfredo Stanzione
An interesting feature of a cosmological phase transition can be a stage of exponential expansion (supercooling). The modified expansion history and the entropy injection at reheat…
Understanding the Nature of Scalar-Induced Gravitational Waves
A. J. Iovino, G. Perna, D. Perrone +2
We offer a physical interpretation of the origin of the scalar-induced gravitational wave background, showing that it is mainly produced around the peaks of the scalar perturbation…