158 citations · 1.4k across the 42 of their papers we have counts for
4 papers · 1 filter
An exponential equation of state of dark energy in the light of 2018 CMB Planck data
Mónica N. Castillo-Santos, A. Hernández-Almada, Miguel A. García-Aspeitia +1
The dynamics of the Universe is analyzed using an exponential function for the dark energy equation of state, known as Gong-Zhang parameterization. The phase space of the free para…
Extended primordial black hole mass functions with a spike
Juan Magaña, Marco San Martín, Joaquín Sureda +3
We introduce a modification of the Press-Schechter formalism aimed to derive general mass functions for primordial black holes (PBHs). In this case, we start from primordial power…
Dark matter from primordial black holes would hold charge
Ignacio J. Araya, Nelson D. Padilla, Marcelo E. Rubio +3
We explore the possibility that primordial black holes (PBHs) contain electric charge down to the present day. We find that PBHs should hold a non-zero net charge at their formatio…
Cosmology under the fractional calculus approach
Miguel A. García-Aspeitia, Guillermo Fernandez-Anaya, A. Hernández-Almada +2
Fractional cosmology modifies the standard derivative to Caputo's fractional derivative of order , generating changes in General Relativity. Friedmann equations are modified, an…