Sh. Assyyaee

activity

20082018

collaborators

4 papers

gr-qc2018

Phantom Origin for f(R) Inflation

Sh. Assyyaee, N. Riazi

We argue that for $f (R) = R + α R^{n}$ model of the early universe, the de Sitter point appears as partial attractor for phantom paths. The phantom trajectories then bend their way to the…

gr-qc2015

$Z_{2}$ Massive Axions, Domain Walls and Inflation

Sh. Assyyaee, N. Riazi

We have analyzed a $U (1)$ model which is broken explicitly to a $Z_{2}$ model. The model results in generating two stable domain walls, in contrast with the more common $N_{D W} = 1$ ve…

gr-qc2015

A new look at dark energy

N. Riazi, Sh. Assyyaee

The origin of the dark energy which is assumed to be responsible for the observed accelerated expansion of the universe still remains a scientific dilemma. Here we propose a tentat…

gr-qc2008

Dark Energy and Matter in 4 Dimensions From an Empty Kaluza-Klein Spacetime

M. H. Dehghani, Sh. Assyyaee

We consider the third order Lovelock equations without the cosmological constant term in an empty $n (\geq 8)$ -dimensional Kaluza-Klein spacetime $\mathcal{M}^{4}\times \mathcal{K}^…

Phantom Origin for f(R) Inflation

Z2​ Massive Axions, Domain Walls and Inflation

A new look at dark energy

Dark Energy and Matter in 4 Dimensions From an Empty Kaluza-Klein Spacetime

$Z_{2}$ Massive Axions, Domain Walls and Inflation