64 citations · 175 across the 14 of their papers we have counts for
14 papers
Observational and Theoretical Studies of 27 Scuti Stars with Investigation of the Period-Luminosity Relation
Atila Poro, Ehsan Paki, Golnaz Mazhari +11
The multi-color CCD photometric study of 27 Delta Scuti stars is presented. By using approximately three years of photometric observations, we obtained the times of maxima and magn…
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…
Refined Ephemeris for Four Hot Jupiters using Ground-Based and TESS Observations
Fatemeh Davoudi, PegahSadat MirshafieKhozani, Ehsan Paki +11
WASP-12 b, WASP-33 b, WASP-36 b, and WASP-46 b are four transiting planetary systems which we have studied. These systems' light curves were derived from observations made by the T…
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…
Implications of the primordial anisotropy for a scalar field with non-minimal kinetic coupling
Amir Ghalee
We consider a scalar field with a kinetic term non-minimally coupled to gravity in an anisotropic background. Various potentials for the scalar field are considered. By explicit ex…
Notes on a scalar field with a kinetic term non-minimally coupled to gravity
Amir Ghalee
We explore the inflationary phase of a scalar field with a kinetic term non-minimally coupled to gravity. We find that one of the slow-roll conditions is naturally consequence of t…
Curiosity about the dust matter in the cosmological context
Amir Ghalee
We propose a model for the dust matter in the cosmological context. The model contains a scalar field with a kinetic term nonminimally coupled to gravity. By investigating the back…
A new phase of scalar field with a kinetic term non-minimally coupled to gravity
Amir Ghalee
We consider the dynamics of a scalar field non-minimally coupled to gravity in the context of cosmology. It is demonstrated that there exists a new phase for the scalar field, in a…
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…