中文
相关论文

相关论文: Generalizations of teleparallel gravity and local …

200 篇论文

We show that in theories of generalised teleparallel gravity, whose Lagrangians are algebraic functions of the usual teleparallel Lagrangian, the action and the field equations are not invariant under local Lorentz transformations. We also…

广义相对论与量子宇宙学 · 物理学 2012-07-04 Baojiu Li , Thomas P. Sotiriou , John D. Barrow

In the current literature, there are many discussions about the local Lorentz invariance of modified teleparallel gravity. This symmetry is obviously violated in the classical "pure tetrad" formulation of the theory, while it gets restored…

广义相对论与量子宇宙学 · 物理学 2024-02-26 Alexey Golovnev

Teleparallel gravity and its popular generalization $f(T)$ gravity can be formulated as fully invariant (under both coordinate transformations and local Lorentz transformations) theories of gravity. Several misconceptions about teleparallel…

广义相对论与量子宇宙学 · 物理学 2019-09-25 M. Krssak , R. J. van den Hoogen , J. G. Pereira , C. G. Boehmer , A. A. Coley

We review the current status of the Lorentz covariance in teleparallel and modified teleparallel theories of gravity, and discuss the controversial features of the different approaches. We also revisit the issue of the remnant Lorentz gauge…

广义相对论与量子宇宙学 · 物理学 2019-07-05 Cecilia Bejarano , Rafael Ferraro , Franco Fiorini , María José Guzmán

In this article we explore local Lorentz transformations in theories of gravity based on the teleparallel formalism. For the teleparallel equivalent of general relativity (TEGR), the spin connection plays no role in the equations of motion,…

广义相对论与量子宇宙学 · 物理学 2021-12-30 Alexey Golovnev , Maria-Jose Guzman

Local Lorentz transformations play an important role in teleparallel gravity theories, in which a tetrad is conventionally employed as a fundamental field variable describing the gravitational field. It is commonly understood that…

广义相对论与量子宇宙学 · 物理学 2022-11-09 Manuel Hohmann

An axiomatization of the so-called Teleparallel Equivalent to General Relativity is presented. A set of formal and semantic postulates are elaborated from where the physical meaning of various key concepts of the theory are clarified. These…

广义相对论与量子宇宙学 · 物理学 2017-11-27 Luciano Combi , Gustavo E. Romero

We investigate modified theories of gravity in the context of teleparallel geometries. It is well known that modified gravity models based on the torsion scalar are not invariant under local Lorentz transformations while modifications based…

广义相对论与量子宇宙学 · 物理学 2015-11-30 Sebastian Bahamonde , Christian G. Boehmer , Matthew Wright

We consider the quantization of matter fields in a background described by the teleparallel equivalent to general relativity. The presence of local Lorentz and gauge symmetries gives rise to different coupling prescriptions, which we…

高能物理 - 理论 · 物理学 2022-03-14 Roberto Casadio , Iberê Kuntz , Gregorio Paci

We construct a theory in which the gravitational interaction is described only by torsion, but that generalizes the Teleparallel Theory still keeping the invariance of local Lorentz transformations in one particular case. We show that our…

广义相对论与量子宇宙学 · 物理学 2016-07-07 Ednaldo L. B. Junior , Manuel E. Rodrigues

Teleparallel gravity has significantly increased in popularity in recent decades, bringing attention to Einstein's other theory of gravity. In this Review, we relate this form of geometry to the broader metric-affine approach to forming…

Teleparallel gravity shares many qualitative features with general relativity, but differs from it in the following way: whereas in general relativity, gravitation is a manifestation of space-time curvature, in teleparallel gravity,…

物理学史与哲学 · 物理学 2024-06-25 James Owen Weatherall , Helen Meskhidze

In this Letter we consider a general quadratic parity-preserving theory for a general flat connection. Imposing a local symmetry under the general linear group singles out the general teleparallel equivalent of General Relativity carrying…

广义相对论与量子宇宙学 · 物理学 2020-04-22 Jose Beltrán Jiménez , Lavinia Heisenberg , Damianos Iosifidis , Alejandro Jiménez-Cano , Tomi S. Koivisto

We discuss the most general class of teleparallel scalar-torsion theories of gravity in their covariant formulation. The only restrictions we impose are the invariance of the action under diffeomorphisms and local Lorentz transformations,…

广义相对论与量子宇宙学 · 物理学 2018-09-12 Manuel Hohmann

We investigate the Lagrange multiplier formulation of teleparallel theories, including f(T) gravity, in which the connection is not set to zero a priori and compare it with the pure frame theory. We show explicitly that the two formulations…

广义相对论与量子宇宙学 · 物理学 2018-07-17 Yen Chin Ong , James M. Nester

It is shown that the extended teleparallel gravitational theories, known as f(T) theories, inherit some on shell local Lorentz invariance associated with the tetrad field defining the spacetime structure. We discuss some enlightening…

广义相对论与量子宇宙学 · 物理学 2015-03-18 Rafael Ferraro , Franco Fiorini

The f(T) gravity is nowadays being widely used for cosmological model building, as well as for constructing spherically symmetric solutions. In its classical pure tetrad formulation it violates the local Lorentz symmetry in the space of…

广义相对论与量子宇宙学 · 物理学 2021-09-24 Alexey Golovnev

Teleparallel gravity theories employ a tetrad and a Lorentz spin connection as independent variables in their covariant formulation. In order to solve their field equations, it is helpful to search for solutions which exhibit certain…

广义相对论与量子宇宙学 · 物理学 2019-10-09 Manuel Hohmann , Laur Järv , Martin Krššák , Christian Pfeifer

The basics of teleparallel gravity and its extensions are reviewed with particular emphasis on the problem of Lorentz-breaking choice of connection in pure-tetrad versions of the theories. Various possible ways to covariantise such models…

广义相对论与量子宇宙学 · 物理学 2017-06-30 Alexey Golovnev , Tomi Koivisto , Marit Sandstad

Symmetric teleparallel gravity theories, in which the gravitational interaction is attributed to the nonmetricity of a flat, symmetric, but not metric-compatible affine connection, have been a topic of growing interest in recent studies.…

广义相对论与量子宇宙学 · 物理学 2022-01-03 Manuel Hohmann
‹ 上一页 1 2 3 10 下一页 ›