7 papers
The Too Visible QCD Axion
Luca Di Luzio, Michele Redi, Alessandro Strumia +2
The paper examines a GeV‑scale QCD axion model where the up‑quark mass arises from the QCD chiral condensate, identifies a structural problem that breaks isospin symmetry and disto…
The soft volume of ultra-high energy neutrinos experiments
Stefano Palmisano, Diego Redigolo, Michele Tammaro +1
The paper presents a semi‑analytical method that uses a Boltzmann‑type transport equation to relate ultra‑high‑energy neutrino fluxes to observable through‑going muon tracks in det…
Particle Production from Inhomogeneities: the off-shell side of gravitational waves
Michele Redi, Andrea Tesi
We continue the study of particle production from gravitational inhomogeneities in the early Universe. Focusing on sources active on sub-horizon scales, we derive general expressio…
The effects of non Bunch-Davies initial conditions on gravitationally produced relics
Enrico Bertuzzo, Gabriel M. Salla, Andrea Tesi
Typical gravitational production of relics from amplification of inflationary perturbations assumes Bunch-Davies initial conditions, i.e. a vacuum with initially no particles. In t…
Super-heated first order phase transitions
Giulio Barni, Andrea Tesi
We study first order phase transitions that occur when the temperature of the system increases and we identify the conditions that lead to super-heating, a phase where the system c…
Exploring ultra-high energy neutrino experiments through the lens of the transport equation
Stefano Palmisano, Diego Redigolo, Michele Tammaro +1
We develop a first-principles formalism, based on the transport equation in the line-of-sight approximation, to link the expected number of muons at neutrino telescopes to the flux…