64 citations · 175 across the 14 of their papers we have counts for
8 papers · 1 filter
Remarks on an extended model
Amir Ghalee
Observation of the cosmic microwave background is consistent with the model. In the model, there exists a dimensionless constant which must be assigned a very large val…
Condensation of a scalar field non-minimally coupled to gravity in a cosmological context
Amir Ghalee
We present a new mechanism to condense a scalar field coupled to the Gauss-Bonnet term. We propose a scenario in which the condensed state will emerge from the background energy de…
Cosmological Perturbations in Restricted f(R)-Gravity
M. Chaichian, A. Ghalee, J. Kluson
We investigate the metric perturbations of the restricted f(R) theory of gravity in the cosmological context and explore the phenomenological implications of this model. We show th…
Restricted f(R) Gravity and Its Cosmological Implications
M. Chaichian, A. Ghalee, J. Kluson
We investigate the f(R) theory of gravity with broken diffeomorphism due to the change of the coefficient in front of the total divergence term in the (3+1)-decomposition of the sc…
Notes on diffeomorphisms symmetry of gravity in the cosmological context
Amir Ghalee
We study the metric perturbations in the context of restricted gravity, in which a parameter for deviation from the full diffeomorphisms of space-time is introduced. We demo…
A new perspective on Gauge-flation
Amir Ghalee
Recently Maleknejad and Sheikh-Jabbari have proposed a new model for inflation with non-Abelian gauge fields (Gauge-flation), and they have studied the model by numerical methods\c…
The phase-space of generalized Gauss-Bonnet dark energy
M. Alimohammadi, A. Ghalee
The generalized Gauss-Bonnet theory, introduced by Lagrangian F(R,G), has been considered as a general modified gravity for explanation of the dark energy. G is the Gauss-Bonnet in…
Remarks on generalized Gauss-Bonnet dark energy
M. Alimohammadi, A. Ghalee
The modified gravity with F(R,G) Lagrangian, G is the Gauss-Bonnet invariant, is considered. It is shown that the phantom-divide-line crossing and the deceleration to acceleration…