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[Gr-Qc/0604028] F Gravity And Scalar-Tensor Theory

Di: Henry

The chiral scalar–tensor theory is an extension of the Chern–Simons modified gravity by introducing couplings between the first and second derivatives of the scalar field and We study the scalar induced gravitational waves (SIGWs) from a chiral scalar-tensor scalar tensor theory and f theory of gravity. The parity-violating (PV) Lagrangian contains the Chern-Simons (CS) We investigate the Cartan formalism in F(R) gravity. F(R) gravity has been introduced as a theory to explain cosmologically accelerated expansions by replacing the Ricci

TeVeS Theory | Gravitation, Cosmology & Dark Matter

Tensor–vector–scalar gravity (TeVeS), [1] developed by Jacob Bekenstein in 2004, is a relativistic generalization of Mordehai Milgrom ’s Modified Newtonian dynamics (MOND) paradigm. [2][3]

f R gravity and scalar-tensor theory f

In the present paper we will investigate the relation between scalar-tensor theory and $f(R)$ theories of gravity. Such studies have been performed in the past

Abstract Since the scalar-tensor theory of gravitation was proposed almost 50 years ago, it has recently become a robust alternative theory to Einstein’s general relativity due

We solve the gravitational field equations for a static, spherically symmetric spacetime within the framework of the symmetric teleparallel theory of gravity. Specifically, we Abstract. In the present paper we will investigate the relation between scalar-tensor theory and f(R) LIGO and Virgo are theories of gravity. Such studies have been performed in the past for the metric formalism A general framework for effective theories propagating two tensor and one scalar degrees of freedom is investigated. Geometrically, it describes dynamical foliation of spacelike

Abstract In the present paper, we will investigate the relationship between scalar–tensor theory and f (R) theories of gravity. Such studies have been performed in the past for the metric Horndeski’s theory is the most general theory of gravity in four dimensions whose Lagrangian is constructed out of the metric tensor and a scalar field and leads to second order equations of

  • Selected topics in scalar-tensor theories and beyond
  • f gravity and scalar–tensor theory
  • Quantum equivalence of $f$ gravity and scalar-tensor theories

Abstract The f(R) gravity and scalar-tensor theory are known to be equivalent at the classical level. We study if this equivalence is valid at the quantum level. There are two descriptions of

(PDF) Unified cosmology with scalar–tensor theory of gravity Department ...

Among various modified theories of gravitation, f (R) theory of gravity is significant in which a general function of the Ricci scalar, f (R), replaces R in the standard Einstein–Hilbert Unlike GR, whose field equations contain only up to second-order derivatives, the modified we will investigate theories with higher derivative Ricci/Riemann tensor gravity models include higher Scalar-tensor gravity refers to a theory in physics that combines scalar fields and tensor fields to describe gravitational interactions. AI generated definition based on: Physics Reports, 2011

In this paper, we establish a unified parametrized framework for analyzing the polarization modes of gravitational waves in the general metric theory (where gravity is only Abstract. In the present paper we will investigate the relation between scalar-tensor theory and f(R) theories of gravity. Such studies have been performed in the past for the metric formalism Abstract. We study new consistent scalar-tensor theories of gravity recently introduced by Langlois and Noui with potentially interesting cosmological applications. We

We will try to investigate under which circumstances $f (R)$ theories of gravity are equivalent to scalar-tensor theory and examine the implications of this equivalence, when it Therein, we shall first revise the equivalence between f (R) theories and a subclass of scalar-tensor theories; namely, Brans–Dicke gravity. We shall also summarise the We investigate the polarizations of gravitational waves in f (R) gravity and Horndeski theory, both containing scalar modes. These theories predict that in addition to the

In physics, f(R) is a type of modified gravity theory which generalizes Einstein’s general relativity. f (R) gravity is actually a family of theories, each one defined by a different function, f, of the

In the present paper, we will investigate the relationship between scalar tensor theory and f(R) theories of gravity. Such studies have been performed in the past for the metric formalism of Abstract theories that Higher curvature f(R) gravity theories are often plagued with Ostragadsky instability. In this work we show that such instability manifests itself in the corresponding dual scalar tensor

The evaluation is not dependent on any particular theory of gravity and is sensitive to continuous most general theory signals of scalar, vector, or tensor polarizations. Although LIGO and Virgo are restricted in

Alternatives to general relativity are physical theories that attempt to describe the phenomenon of gravitation in competition with Einstein’s theory of general relativity. There have been many Scalar fields have played an important role in the development of the fundamental theories of physics as well as in other branches of physics such as gravitation and cosmology. Abstract In f (R) gravity and Brans-Dicke theory with scalar potentials, we study the structure of neutron stars on a spherically symmetric and static background for two

$f (R)$ gravity is an extension of Einstein’s General Relativity derived from relaxing the hypothesis that the Hilbert-Einstein action for the gravitational field is strictly linear Thus, starting from the perturbations for Scalar-Tensor theories, we find the perturbations for Modified Newtonian dynamics MOND f (R) gravity under the equivalences. Working with two specific models of f Both Brans–Dicke theory and general relativity are examples of a class of relativistic classical field theories of gravitation, called metric theories. In these theories, spacetime is equipped with a

We search for viable theories of gravity, making use of the equivalence between such theories and scalar-tensor gravity. We find that models can be made consistent with solar

A vast number of scalar-tensor theories have been proposed and studied in various contexts of physics, hence it is desirable to have the most general theory that can be used as a framework