11 citations · 20 across the 4 of their papers we have counts for
4 papers
Tensor Modes Damping in Matter and Vacuum Dominated Era
Jafar Khodagholizadeh, Amir H. Abbassi, Ali A. Asgari
The present paper has developed an integro-differential equation to propagate cosmological gravitation waves in matter-dominated era in accounting for the presence of free streamin…
Damping of tensor mode in spatially closed cosmology
Jafar Khodagholizadeh, Amir H. Abbassi, Ali A. Asgari
We derive an integro-differential equation for propagation of cosmological gravitation waves in spatially closed cosmology whereas the traceless transverse tensor part of the aniso…
Evolution of the spectral index after inflation
Ali A. Asgari, Amir H. Abbassi
In this article we investigate the time evolution of the adiabatic(curvature) and isocurvature (entropy) spectral indices after end of inflation for all cosmological scales and two…
On the perturbation theory in spatially closed background
Ali A. Asgari, Amir H. Abbassi, Jafar Khodagholizadeh
In this article,we investigate some features of the perturbation theory in spatially closed universe. We will show that the perturbative field equations in a spatially closed unive…