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math.CA2026
Hypergeometric solutions to coupled Klein-Gordon equations in cosmology with small-field excursions
Amin Aboubrahim, Anastasiia Minenkova, Tomas Yonkers
The Klein-Gordon equation is a second order differential equation that appears in a variety of applications in mathematics, physics and engineering. This equation is often solved u…
astro-ph.CO2026
Automatic detection of fast oscillations of dark matter scalar field and updated cosmological constraints on QCDM
Amin Aboubrahim, Pran Nath
It is well known that a scalar field dark matter with a quadratic potential undergoes fast oscillations when the time period represented by the mass scale in the Klein-Gordon equat…
astro-ph.CO2026
A study of dark matter-dark energy interaction under the DESI DR2 data constraint
Amin Aboubrahim, Pran Nath
While CDM provides a good fit to cosmological data, it fails to address many of the outstanding questions in contemporary cosmology. Chief among these are the Hubble tension and…