6 citations · 10 across the 8 of their papers we have counts for
8 papers
When the Environment Speaks: Quantum Signatures in Non-Attractor Inflation
Mattia Cielo, Simone Scarlatella, Gianpiero Mangano +1
We study the open quantum dynamics of the adiabatic curvature perturbation interacting with a massive entropic scalar environment during an inflationary scenario featuring a transi…
Isochrones in primordial magnetic field evolution
Axel Brandenburg, Mattia Cielo, Oksana Iarygina +1
In the early universe, a primordial magnetic field undergoes a turbulent decay while its length scale increases due to an inverse cascade. The size of the largest processed eddy sc…
Primordial Gravitational Waves from Scalar Backreaction in Axion-SU(2) Inflation
Mattia Cielo, Ema Dimastrogiovanni, Matteo Fasiello +1
In this work, we perform the first numerical study of strong scalar backreaction in spectator chromo-natural inflation (SCNI) in the case where the spectator sector decays during i…
Quantum Recoherence in Presence of Excited States in the Early Universe
Mattia Cielo, Simone Scarlatella, Gianpiero Mangano +2
We investigate the quantum-to-classical transition of primordial perturbations within a two-field inflationary framework where an adiabatic mode interacts with an entropic environm…
Steepest Growth in the Primordial Power Spectrum from Excited States at a Sudden Transition
Mattia Cielo, Gianpiero Mangano, Ofelia Pisanti +1
Sudden phase transitions during inflation can give rise to strongly enhanced primordial density perturbations on scales much smaller than those directly probed by cosmic microwave…
Gravitational Wave non-Gaussianity from trans-Planckian Quantum Noise
Mattia Cielo, Matteo Fasiello, Gianpiero Mangano +1
We examine the effect of a trans-Planckian phase on the dynamics of inflationary tensor perturbations. To remedy the fact that this regime is not fully captured by standard perturb…
Neff in the Standard Model at NLO is 3.043
Mattia Cielo, Miguel Escudero, Gianpiero Mangano +1
The effective number of relativistic neutrino species is a fundamental probe of the early Universe and its measurement represents a key constraint on many scenarios beyond the Stan…
Impact of trans-Planckian quantum noise on the Primordial Gravitational Wave spectrum
Mattia Cielo, Gianpiero Mangano, Ofelia Pisanti
We investigate the impact of stochastic quantum noise due to trans--Planckian effects on the primordial power spectrum for gravity waves during inflation. Given an energy scale Lam…