16 citations · 30 across the 7 of their papers we have counts for
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gr-qc2025
Primordial black hole formation in matter domination
Ehsan Ebrahimian, Ali Akbar Abolhasani, Mehrdad Mirbabayi
We study Primordial Black Holes (PBHs) formed by the collapse of rare primordial fluctuations during an early period of Matter Domination. The collapse threshold strongly depends o…
gr-qc2016★ 16 cited
\bf Formalism: A New Approach to Cosmological Perturbation Theory in Anisotropic Inflation
Alireza Talebian-Ashkezari, Nahid Ahmadi, Ali Akbar Abolhasani
We study the evolution of the metric perturbations in a Bianchi background in the long-wavelength limit. By applying the gradient expansion to the equations of motion we exhibit a…