From the 1 of 10 linked papers with an AI index.
10 papers
micrOMEGAs 7: Beyond standard cosmology
G. Belanger, A. Belyaev, N. Bernal +4
micrOMEGAs 7 is an upgraded software package that computes dark‑matter observables while allowing user‑defined modifications to the early‑Universe expansion, entropy, and non‑therm…
Primordial Gravitational Waves from Phase Transitions during Reheating
Amitayus Banik, Nicolás Bernal, Fazlollah Hajkarim
We study primordial gravitational waves (GWs) generated from first-order phase transitions (PTs) during cosmic reheating. Using a minimal particle physics model, and a general para…
From Rags to Jeans: Axion Miniclusters from Early matter domination
Ariel Angulo, Paola Arias, Nicolás Bernal +1
In an early matter-dominated era, density and temperature inhomogeneities of the radiation bath grow more efficiently than in the standard radiation-dominated history. If the axion…
Probing Bose-enhanced Inflaton Decay with Gravitational Waves
Nicolás Bernal, Quan-feng Wu, Xun-Jie Xu +1
We investigate cosmic reheating dynamics in the presence of a transient condensate formed by bosonic decay products of the inflaton. We show that the emergence of such a condensate…
Next-to-Minimal Freeze-in Dark Matter
Nicolás Bernal, Sagnik Mukherjee, James Unwin
If the dark matter mass exceeds the highest temperature of the thermal bath, then dark matter production is Boltzmann suppressed. This opens new possibilities for dark matter model…
Strongly interacting singlet scalar dark matter during reheating
Geneviève Bélanger, Nicolás Bernal, Alexander Pukhov
We revisit the singlet scalar dark matter model in the presence of a non-standard cosmological history prior to radiation domination. We focus on the regime in which the relic abun…