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The Maxwell extension of the conformal algebra is presented. With the help of gauging the Maxwell-conformal group, a conformally invariant theory of gravity is constructed. In contrast to the conventional conformally invariant actions, our…

高能物理 - 理论 · 物理学 2020-02-21 Salih Kibaroğlu , Oktay Cebecioğlu

We show that promoting the trace part of the Einstein equations to a trivial identity results in the Newton constant being an integration constant. Thus, in this formulation the Newton constant is a global dynamical degree of freedom which…

广义相对论与量子宇宙学 · 物理学 2021-04-16 Pavel Jiroušek , Keigo Shimada , Alexander Vikman , Masahide Yamaguchi

We consider the interaction of gravity, as expressed by Einstein's Equations of General Relativity, to other force fields. We describe some recent results, discussing both the mathematics, and the physical interpretations. These results…

广义相对论与量子宇宙学 · 物理学 2007-05-23 Joel A. Smoller

We study the dynamics of a charged tracer particle (TP) on a two-dimensional lattice all sites of which except one (a vacancy) are filled with identical neutral, hard-core particles. The particles move randomly by exchanging their positions…

统计力学 · 物理学 2009-11-07 O. Benichou , G. Oshanin

A review of General Relativity, Teleparallel Gravity, and Symmetric Teleparallel gravity is given in this paper. By comparing these theories some conclusions are obtained. It is argued that the essence of gravity is the translation…

广义相对论与量子宇宙学 · 物理学 2021-08-23 Jianbo Lu , Yongxin Guo , Guoying Chee

General relativity in the form where gravitational perturbations together with other physical fields propagate on an auxiliary background is considered. With using the Katz-Bi{\v{c}}\'ak-Lynden-Bell technique new conserved currents,…

广义相对论与量子宇宙学 · 物理学 2007-05-23 A. N. Petrov

We study the partition functions of quantum impurity problems in the domain of complex applied bias for its relation to the non-equilibrium current suggested by Fendley, Lesage and Saleur (cond-mat/9510055). The problem is reformulated as a…

介观与纳米尺度物理 · 物理学 2009-10-30 Sergei Skorik

We define `third derivative' General Relativity, by promoting the integration measure in Einstein-Hilbert action to be an arbitrary $4$-form field strength. We project out its local fluctuations by coupling it to another $4$-form field…

高能物理 - 理论 · 物理学 2022-09-21 Nemanja Kaloper

The Einstein equation is derived from the proportionality of entropy and horizon area together with the fundamental relation $\delta Q=TdS$ connecting heat, entropy, and temperature. The key idea is to demand that this relation hold for all…

广义相对论与量子宇宙学 · 物理学 2010-11-01 Ted Jacobson

The Einstein theory of general relativity provides a peculiar example of classical field theory ruled by non-linear partial differential equations. A number of supplementary conditions (more frequently called gauge conditions) have also…

广义相对论与量子宇宙学 · 物理学 2016-11-23 Giampiero Esposito , Cosimo Stornaiolo

Recently it was observed that the first law of Entanglement leads to the linearized Einstein equation. In this paper, we point out that the gravity dual of an relative entropy expression is equivalent to the full non-linear Einstein…

高能物理 - 理论 · 物理学 2018-07-18 Eunseok Oh , I. Y. Park , Sang-Jin Sin

We introduce a proposal to modify Einstein's equations by embedding them in a larger symmetric hyperbolic system. The additional dynamical variables of the modified system are essentially first integrals of the original constraints. The…

广义相对论与量子宇宙学 · 物理学 2009-10-31 Othmar Brodbeck , Simonetta Frittelli , Peter Huebner , Oscar A. Reula

A nonlocal generalization of Einstein's theory of gravitation is constructed within the framework of the translational gauge theory of gravity. In the linear approximation, the nonlocal theory can be interpreted as linearized general…

广义相对论与量子宇宙学 · 物理学 2009-03-24 Friedrich W. Hehl , Bahram Mashhoon

A non-equilibrium steady state can be characterized by a nonzero but stationary flux driven by a static external force. Under a weak external force, the drift velocity is difficult to detect because the drift motion is feeble and submerged…

统计力学 · 物理学 2015-06-22 Rui Shi , Yanting Wang

General Relativity with nonvanishing torsion has been investigated in the first order formalism of Poincare gauge field theory. In the presence of torsion, either side of the Einstein equation has the nonvanishing covariant divergence. This…

广义相对论与量子宇宙学 · 物理学 2007-05-23 Tomoki Watanabe , Mitsuo J. Hayashi

We give a reformulation of non-linear Einstein gravity, which contains the dual graviton together with the ordinary metric and a shift gauge field. The metric does not enter through a `kinetic' Einstein-Hilbert term, but via topological…

高能物理 - 理论 · 物理学 2012-05-01 Nicolas Boulanger , Olaf Hohm

Within loop quantum gravity we construct a coarse-grained approximation for the Einstein-Maxwell theory that yields effective Maxwell equations in flat spacetime comprising Planck scale corrections. The corresponding Hamiltonian is defined…

高能物理 - 理论 · 物理学 2009-11-07 Jorge Alfaro , Hugo A. Morales-Técotl , Luis F. Urrutia

Einstein Gravity in 2+1 dimensions arises as a consequence of the equations of motion of a gauge model in an external metric. Newton's constant appears as an order parameter of a spontaneously broken discrete symmetry. Matter is coupled in…

高能物理 - 理论 · 物理学 2007-05-23 R. Brooks , D. Cangemi , M. Crescimanno

In the classical (non-quantum) relativity theory the course of the moving clock is dilated as compared to the course of the clock at rest (the Einstein dilation). Any unstable system may be regarded as a clock. The time evolution (e.g., the…

量子物理 · 物理学 2009-11-13 M. I. Shirokov

This paper uses dynamical invariants to describe the evolution of collisionless systems subject to time-dependent gravitational forces without resorting to maximum-entropy probabilities. We show that collisionless relaxation can be viewed…

星系天体物理 · 物理学 2015-06-03 Jorge Peñarrubia
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