Exact solutions in f r theory of gravity
Webf ( R) gravity as presented in the previous sections is a scalar modification of general relativity. More generally, we can have a coupling involving invariants of the Ricci tensor and the Weyl tensor. Special cases are f ( R) gravity, conformal gravity, Gauss–Bonnet gravity and Lovelock gravity. WebDec 5, 2014 · The main purpose of this paper is to investigate the exact solutions of cylindrically symmetric spacetime in the context of f(R,T) gravity (Harko et al. in Phys. Rev. D 84:024020, 2011), where f(R,T) is an arbitrary function of Ricci scalar R and trace of the energy momentum tensor T. We explore the exact solutions for two different classes of …
Exact solutions in f r theory of gravity
Did you know?
Webf(R) theory of gravity with the assumption that the expansion is proportional to the shear scalar ˙. We present some basics of. f(R) theory of gravity. Moreover, the physical behavior of such a model has also been discussed. 2. f(R) Theory of Gravity. The. f(R) theory is a modification of the general theory of relativity (GR). The field ... Webcoupling constant, this method is applicable to f(R) gravity in the Einstein frame. Also in the recent years some exact solutions for static spherically symmetric perfect fluid in f(R) theory of gravity are presented [9, 10, 11]. Since the field equations of f(R) theory are differential equations of fourth order, more integration 1
WebSep 9, 2016 · Request PDF Exact solutions in F(R) theory of gravity We find a new method for looking for the static and spherically symmetric solutions in f(R) theory of … WebExact black hole and cosmological solutions are obtained for a special two-dimensional dilaton-spectator (ϕ − ψ) theory of gravity. We show how in this context any desired spa
WebFeb 26, 2016 · We find a new method for looking for the static and spherically symmetric solutions in $F(R)$ theory of gravity. With this method, a number of new solutions in … Webparameters to develop a minimal background about f(G,T) theory of gravity. The exact bouncing solutions with physical analysis are provided with the choice of two equation of state parameters. ... literature to obtain some interesting results while studying f(R,T) theory of gravity [41]. The evolution of Hubble parameter is shown in Fig. 1 for ...
WebApr 13, 2024 · The purpose of this paper is to study the Kaluza-Klein universe in the context of the f (R, T) gravity theory using magnetized strange quark matter (MSQM). To obtain exact solutions of field equations, we assume two types of volumetric expansion: power law and exponential law volumetric expansions. The violation of energy conditions has …
WebApr 12, 2024 · The dRGT massive gravity represents a comprehensive theory which properly describes massive graviton field. Latterly, the exact spherical solutions are identified for the black hole in the dRGT massive gravity theory. In this paper, we derive Bousso’s D-bound entropy for the black hole solutions of dRGT massive gravity. By an … show date without time in sqlWebSep 9, 2016 · We find a new method for looking for the static and spherically symmetric solutions in F(R) theory of gravity. With this method, a number of new solutions in … show date today in excelshow date windows taskbarWebJun 22, 2024 · of f(R) theory of gravity. The EFEs in a homogeneous and isotropic space-time give rise to the Friedmann equations that describe the evolution of the universe. In … show date with small taskbar buttonsWebApr 4, 2024 · Request PDF On Apr 4, 2024, K. A. Bronnikov and others published Arbitrary Static, Spherically Symmetric Space-Times as Solutions of Scalar-Tensor Gravity Find, read and cite all the research ... show date without time c#WebJul 4, 2012 · Among the various modifications, f ( R) theory of gravity is treated most suitable due to cosmologically important f ( R) models. It has been suggested that cosmic acceleration can be achieved by replacing the Einstein-Hilbert action of general relativity with a general function Ricci scalar, f ( R ). show date time on taskbar windows 11WebFeb 22, 2024 · Momeni [ 33] obtained a two-parameter family of exact solutions which contains a cosmological constant and proved that in f ( R) gravity the constant curvature solution in cylindrically symmetric cases is only one member of the most generalized Tian family in General relativity. show date windows 10