376 citations
- Zhejiang University of TechnologyCN42 papers
- L. N. Gumilyov Eurasian National UniversityKZ34 papers
- University of the SciencesUS27 papers
- Başkent UniversityTR26 papers
- Quaid-i-Azam UniversityPK25 papers
- State University of TetovaMK25 papers
- Abdus Salam Centre for PhysicsPK19 papers
- National University of UzbekistanUZ18 papers
- Research Institute for Astronomy and Astrophysics of MaraghIR16 papers
- Ulugh Beg Astronomical InstituteUZ16 papers
- Tashkent Institute of Irrigation and Agricultural Mechanization EngineersUZ15 papers
- Canadian Quantum Research CenterCA14 papers
19 papers · 1 filter
Weyl collineations that are not curvature collineations
Ibrar Hussain, Asghar Qadir, K. Saifullah
Though the Weyl tensor is a linear combination of the curvature tensor, Ricci tensor and Ricci scalar, it does not have all and only the Lie symmetries of these tensors since it is…
Classification of spacetimes according to conformal Killing vectors
K. Saifullah
Conformal Killing vectors (CKVs) preserve the spacetime metric up to a factor. Homothetic vectors and Killing vectors are special cases of CKVs. Classification of some classes of s…
Model of interacting dark energy in five-dimensional brane cosmology
Mubasher Jamil
We here investigate the model of interacting dark energy in the context of five dimensional brane cosmology. The effective equations of state of dark energy are evaluated for vario…
Gravitational collapse of radiation fluid in higher dimensions
Mubasher Jamil, Umar Farooq
We examine the problem of the gravitational collapse using higher dimensional Husain spacetime for the null fluid. The equations of state chosen to solve the field equations contai…
On the resolution of cosmic coincidence problem and phantom crossing with triple interacting fluids
Mubasher Jamil, Farook Rahaman
We here investigate a cosmological model in which three fluids interact with each other involving certain coupling parameters and energy exchange rates. The motivation of the probl…
Cosmic coincidence problem and variable constants of physics
Mubasher Jamil, Farook Rahaman, Mehedi Kalam
The standard model of cosmology is investigated using time dependent cosmological constant and Newton's gravitational constant . The total energy content is described by the…