32 citations · 188 across the 17 of their papers we have counts for
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astro-ph.CO2023
Early Dark Energy and Dark Photon Dark Matter from Waterfall Symmetry Breaking
Alireza Talebian
We investigate a cosmological model wherein a waterfall symmetry breaking occurs during the radiation-dominated era. The model comprises a complex waterfall field, an axion field,…
astro-ph.CO2023
Revisiting the stochastic QCD axion window: departure from equilibrium during inflation
Vadim Briaud, Kenji Kadota, Shinji Mukohyama +2
If dark matter is made of QCD axions, its abundance is determined by the vacuum expectation value acquired by the axion field during inflation. The axion is usually assumed to foll…
gr-qc2023★ 1 cited
Induced Gravitational Waves from Ultra Slow-Roll Inflation and Pulsar Timing Arrays Observations
Hassan Firouzjahi, Alireza Talebian
The stochastic gravitational wave background (SGWB) detected recently by the pulsar timing arrays (PTAs) observations may have cosmological origins. In this work we consider a mode…