Four parameter group of transformations containing rotations and time translations is consi[1]dered due to spherical symmetry and stationarity of the space-time metric. It is found that there exists such a quartet of Killing vector fields which constitute the Lie algebra of the transforma[1]tion group and in which space-like vectors are not orthogonal to the time-like one. The metric corresponding to the Lie algebra of Killing vectors is composed. It is shown that the metric is non-static.
| Mualliflar | Khashaev, M.M. |
|---|---|
| Jurnal | O‘zbekiston fizika jurnali |
| Nashr sanasi | 2020-10-21 |
| Jild | 22 |
| Son | 4 |
| Betlar | 223-226 |
| Til | Ingliz |
| DOI | 10.52304/.v22i4.162 |
DOI: 10.52304/.v22i4.162 · Maqolaning asl sahifasi
общая теория относительности, векторы Киллинга, дифференциальная геометрия., general relativity, Killing vectors, differential geometry.
The results of laboratory experiments to study the effect of reverse bias with a duration of 60, 600 and 2000 s. on the parameters of solar cells (SC) based on an absorbing layer consisting of Cu, In, Ga and Se (CIGS)…
The excited collective states of heavy even-even nuclei of the quadrupole type are studied in the framework of an arbitrary nonaxiality approximation of the nonadiabatic collective model. The energy spectrum of the…
By the complex methods of labeled atoms (169Er, 170Tm , 153Sm и 175Y b ), autoradiography, measurements of electrical conductivity and Hall effect, isothermal relaxation of capacitance and current, diffusion, solubility…
The bank of observational data on dwarf galaxies has been assembled. Based on the observational data, a special composite catalog of dwarf galaxies up to a distance of 121 Mpc was composed. This catalog contains…
The root-mean-square displacement of atoms in the new cubic refractory alloy Ti070Mo030C has been determined by the methods of least squares and full-profile analysis based on neutron diffraction data. The values of the…
Within the framework of general relativity, a model of an equilibrium configuration of gravitating object is constructed. The spherical symmetric object studied consists of a spherical layer of a hypothetical…
In this work, several liquid electrolytes (LE) have been prepared. The electrolytes contain tetrapropylammonium iodide (TPAI) salt with different salt content, propylene carbonate (PC), ethylene carbonate (EC)…
The smelting of industrial silicon is the most energy-intensive and environmentally hazardous process in the production chain of solar cells and electronic products. To solve the problem, new physically justified…
The article presents the results of a study on the production of nanofibre anisotropic nanoporous materials based on silk fibroin and cotton cellulose by electrospinning using a rotating screen-receiver of nanofibers in…
In the paper, the results of quantum-chemical simulation of five possible conformers of a propanol molecule, as well as of their hydrogen-bonded dimers are presented. Optimal geometry and energy parameters of the…