Yashar Akrami

TL;DR: In this paper, the authors study the implications of the recent detection of gravitational waves emitted by a pair of merging neutron stars and their electromagnetic counterpart, events GW170817 and GRB1708 17A, on the viability of the doubly coupled bimetric models of cosmic evolution, where the two metrics couple directly to matter through a composite effective metric.

TL;DR: In this paper, the Friedmann equation for the effective metric through which matter couples to the two metrics, and its solutions are derived for certain parameter choices, including minimal models, maximally-symmetric models, and a candidate partially-massless theory.

TL;DR: In this article, the Integrated Sachs-Wolfe (ISW) effect in ghost-free, massive bigravity, where only one metric couples to matter, is studied. And the authors focus on the infinite-branch bigravity (IBB) model which exhibits viab

TL;DR: In this paper, the authors investigate the coverage of weak-scale supersymmetry models with constrained minimal supersymmetric standard models (CMSSM) when only constrained by data from direct searches for dark matter.

TL;DR: There is a no-go theorem forbidding flat and closed FLRW solutions in massive gravity on a flat reference metric, while open solutions are unstable as mentioned in this paper, and it has been shown that this nogo theorem ca...