[PDF] Top 20 A Cyclic Cosmological Model Based on the f(ρ) Modified Theory of Gravity

... ed cyclic universe model. This single both the role of regular mat- ter/energy when neede e FLRW era and the role of dark matter/energy when needed in other eras in the cy- clic universe model. See ... See full document

... This model was studied earlier in ...This model admits the self-accelerating solution ...this theory exhibits the Boulware-Deser phenomenon and / or other instabilities in self-accelerating ... See full document

... World-Universe Model is based on the decisive role of the Medium of the World composed of massive particles: protons, electrons, photons, neutrinos, and dark matter ...lensing, cosmological redshift, ... See full document

... local gravity, the models have to apply the chameleon mechanism [29,30] to overcome the solar system ...the cosmological and the local gravity ...and modified theories are also having a ... See full document

... by modified gravity ...the model parameters of the so-called scalar-tensor gravity theory, one of the modified gravity ...scalar-tensor gravity theory is ... See full document

... are f R ( ) theory of gravity and a general scheme for the modified f R ( ) gravity reconstruction from any realistic FRW cosmology developed by Nojiri and Odintsov [33, ...in ... See full document

... fundamental theory to describe the geometric properties of space- ...the cosmological observational data that the universe is undergoing an accelerated expansion and fundamental agent driving the ... See full document

... successful theory to explain most of the known gravitational phenomena but it fails to explain the accelerating expansion of the ...of cosmological models have been proposed by different ...from ... See full document

... Abstract: A self consistent system of Bianchi type-I space-time in Kasner form gravitational field and a binary mixture of perfect fluid and dark energy in a modified theory of gravity are ... See full document

... gravity theory (Bertolami Nojiri and Odintsov, has much importance amongst the modified theories of supposed to provide natural gravitation alternatives to dark energy and explain current ...the ... See full document

... invariant cosmological perturbations in UV-modified, z = 3 Hoˇrava gravity with one scalar matter field, which has been proposed as a renormalizable gravity theory without the ghost ... See full document

... the cosmological constant, quintessence, phantom, quintom as well as the (generalized) Chaplygin gas, and so ...of gravity is one of the attractive approaches to deal with mysterious nature of dark ...is ... See full document

... The main purpose of this thesis was to try and motivate the theoretical development of MOND and MOND-like paradigms, with the hope of finding solutions to some outstanding problems. The first steps in this have been ... See full document

... entropic gravity. This concept is based upon the proposal, put forward in 1999 by Jacobson [22], to reverse the ...a theory that claims to give an adequate explanation for the origin of dark matter ... See full document

... recently, modified theories of gravity have been ...various modified theories namely f(R),f(G),f(R,G) and f(R,T) ...of modified gravity theories is the ... See full document

... (EOS) based on the phenomenological bag model of quark matter, in which quark confinement is described by an energy term proportional to the ...this model the quark matter is composed of massless u, ... See full document

... the f(R) gravity with a special form of deceleration ...Some gravity obtained by Farasat Shamir ...given theory of cosmology and ...anisotropy model of the universe plays an important ... See full document

... explanation. First of all, we do not care about the “correct” sign for the kinetic term, because our scalar χ is not the “genuine” (i. e., fundamental) one. Some part of it we have already “used” as the created ... See full document

... using observations of gravitational radiation, one would have to probe systems with orbital frequency 1 of 10 −4 seconds. Unfortunately, these frequencies are higher than the regions that the LIGO detector and LISA (a ... See full document

... accurate cosmological measurements and analysis [10] [18] ...Einstein’s theory fares better but does not capture the complete ...quantum gravity is concerned at present [10] [18] ... See full document