WebJan 26, 2024 · Bimetric gravity is an interesting alternative to standard GR given its potential to provide a concrete theoretical framework for a ghost-free massive gravity theory. Here we investigate a class of Bimetric gravity models for their cosmological implications. We study the background expansion as well as the growth of matter … WebIn the mathematical field of differential geometry, the Riemann curvature tensor or Riemann–Christoffel tensor (after Bernhard Riemann and Elwin Bruno Christoffel) is the most common way used to express the curvature of Riemannian manifolds.It assigns a tensor to each point of a Riemannian manifold (i.e., it is a tensor field).It is a local …
Gravimetric Definition & Meaning Dictionary.com
WebTitle: Cosmological Solutions in Bimetric Gravity and their Observational Tests Authors: Mikael von Strauss, Angnis Schmidt-May, Jonas Enander, Edvard Mortsell, S. F. Hassan, Comments: 24 pages arXiv:1109.3515 [hep-th] [abs, ps, pdf, other]: Title: Bimetric Gravity from Ghost-free Massive Gravity Authors: S. F. Hassan Rachel A. Rosen WebJul 8, 2013 · Abstract. This paper is devoted to the Hamiltonian analysis of bimetric gravity in vierbein formulation. We identify all constraints and determine their nature. We show that there are no ... grant county indiana land surveyors
[2303.11353] Bimetric-Affine Quadratic Gravity
WebJan 4, 2024 · 14, 15] through his construction of a bimetric theory of gravity. In [16] a bimetric. gravity w as obtained from ghost-free massive gravit y. Our theory developed here. WebIn the bimetric scalar–tensor gravitational theory there are two frames associated with the two metrics ĝ μν and g μν, which are linked by the gradients of a scalar field ϕ. The … Bimetric gravity or bigravity refers to two different classes of theories. The first class of theories relies on modified mathematical theories of gravity (or gravitation) in which two metric tensors are used instead of one. The second metric may be introduced at high energies, with the implication that the speed … See more In general relativity (GR), it is assumed that the distance between two points in spacetime is given by the metric tensor. Einstein's field equation is then used to calculate the form of the metric based on the distribution of … See more • Alternatives to general relativity • DGP model • Scalar–tensor theory See more Since 2010 there has been renewed interest in bigravity after the development by Claudia de Rham, Gregory Gabadadze, and Andrew Tolley (dRGT) of a healthy theory of massive gravity. Massive gravity is a bimetric theory in the sense that nontrivial … See more chip acronis