303 citations · 2k across the 48 of their papers we have counts for
4 papers · 1 filter
Effect of transitions in the Planck mass during inflation on primordial power spectra
Amjad Ashoorioon, Carsten van de Bruck, Peter Millington +1
We study the effect of sudden transitions in the effective Planck mass during inflation on primordial power spectra. Specifically, we consider models in which this variation result…
Gauged M-flation After BICEP2
A. Ashoorioon, M. M. Sheikh-Jabbari
In view of the recent BICEP2 results [arXiv:1403.3985] which may be attributed to the observation of B-modes polarization of the CMB with tensor-to-scalar ratio $r=0.2_{-0.05}^{+0.…
Non-Bunch-Davies Initial State Reconciles Chaotic Models with BICEP and Planck
Amjad Ashoorioon, Konstantinos Dimopoulos, M. M. Sheikh-Jabbari +1
The BICEP2 experiment has announced a signal for primordial gravity waves with tensor-to-scalar ratio [arXiv:1403.3985]. There are two ways to reconcile thi…
Black Holes as Beads on Cosmic Strings
Amjad Ashoorioon, Robert B. Mann
We consider the possibility of formation of cosmic strings with black holes as beads. We focus on the simplest setup where two black holes are formed on a long cosmic string. It tu…