2 papers
astro-ph.CO2016
CMB and reheating constraints to α-attractor inflationary models
Mehdi Eshaghi, Moslem Zarei, Nematollah Riazi +1
After Planck 2013, a broad class of inflationary models called α-attractors was developed which has universal observational predictions. For small values of the parameter α, the mo…
gr-qc2015
Bulk Viscosity and Particle Creation in the Inflationary Cosmology
Mehdi Eshaghi, Nematollah Riazi, Ahmad Kiasatpour
We study particle creation in the presence of bulk viscosity of cosmic fluid in the early universe within the framework of open thermodynamical systems. Since the first-order theor…