24 citations · 89 across the 12 of their papers we have counts for
14 papers
Correlation of Horizons and Black Hole Thermodynamics
Sanam Azarnia, S. Sedigheh Hashemi
For black holes with more than one horizon, the existence of a global temperature is not fully understood. This can affect the thermodynamics of these black holes to be unclear. In…
On the first law of holographic complexity
S. Sedigheh Hashemi, Ghadir Jafari, Ali Naseh
In this paper, we examine the proposed first law of holographic complexity through studying different perturbations around various spacetime backgrounds. We present a general expre…
More on Complexity in Finite Cut Off Geometry
S. Sedigheh Hashemi, Ghadir Jafari, Ali Naseh +1
It has been recently proposed that late time behavior of holographic complexity in a uncharged black brane solution of Einstein-Hilbert theory with boundary cut off is consistent w…
Charged scalar quasi-normal modes for higher-dimensional Born-Infeld dilatonic black holes with Lifshitz scaling
S. Sedigheh Hashemi, Mahdi Kord Zangeneh, Mir Faizal
We study quasi-normal modes for a higher dimensional black hole with Lifshitz scaling, as these quasi-normal modes can be used to test Lifshitz models with large extra dimensions.…
Boosted Kaluza- Klein magnetic monopole
S. Sedigheh Hashemi, Nematollah Riazi
We consider a Kaluza-Klein vacuum solution which is closely related to the Gross-Perry-Sorkin (GPS) magnetic monopole. The solution can be obtained from the Euclidean Taub-NUT solu…
Boosted Cylindrical Magnetized Kaluza-Klein Wormhole
S. Sedigheh Hashemi, Nematollah Riazi
In this work, we consider a vacuum solution of Kaluza-Klein theory with cylindrical symmetry. We investigate the physical properties of the solution as viewed in four dimensional s…
Stephani Cosmology: Entropically Viable But Observationally Challenged
Yen Chin Ong, S. Sedigheh Hashemi, Rui An +1
Inhomogeneous cosmological models such as the Stephani universes could, in principle, provide an explanation for the observed accelerated expansion of the Universe. Working with a…
Optical properties of Born-Infeld-dilaton-Lifshitz holographic superconductors
M. Kord Zangeneh, S. S. Hashemi, A. Dehyadegari +2
In this paper, we first study the Lifshitz-dilaton holographic superconductors with nonlinear Born-Infeld (BI) gauge field and obtain the critical temperature of the system for dif…
Vacuum thick brane solution with a Gaussian warp function
S. Sedigheh Hashemi, Nematollah Riazi
This work deals with modified gravity in five dimensional space-time. The Gaussian thick brane is shown to be an exact solution in the frame work of gravity in five d…
From Taub-NUT to Kaluza-Klein magnetic monopole
Nematollah Riazi, S. Sedigheh Hashemi
We present a Kaluza-Klien vacuum solution which closely resembles the Taub-NUT magnetic monopole and we investigate its physical properties as viewed from four space-time dimension…
Tachyon inflation with steep potentials
K. Rezazadeh, K. Karami, S. Hashemi
Within the framework of tachyon inflation, we consider different steep potentials and check their viability in light of the Planck 2015 data. We see that in this scenario, the inve…
Exact Anisotropic Solutions of the Generalized TOV Equation
Nematollah Riazi, S. Sedigheh Hashemi, S. Naseh Sajadi +1
We explore gravitating relativistic spheres composed of an anisotropic, barotropic uid. We assume a bi-polytropic equation of state which has a linear and a power-law terms. The ge…
Kaluza-Klein magnetic monopole a la Taub-NUT
N. Riazi, S. Hashemi
In this paper, we consider a new vacuum solution of the Kaluza-Klien theory which resembles the Taub-NUT metric in five dimensions and we investigate its physical properties as pro…
Dark side of the universe in the Stephani cosmology
S. Sedigheh. Hashemi, S. Jalalzadeh, N. Riazi
We investigate the late time acceleration of the universe in the context of the Stephani model. This solution generalizes those of Friedmann-Lemaitre-Robertson-Walker (FLRW) in suc…