Bimetric gravity
http://export.arxiv.org/abs/1109.3515 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 …
Bimetric gravity
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WebOne is Bimetric Gravity, a modification of GR which breaks the assumption that one single, massless spin-2 object acts as its force carrier. Original results are presented on the phenomenology of the massive graviton, where we analyse the modified propagation of gravitational waves and set competitive bounds on the graviton mass. Furthermore ... WebMar 20, 2024 · Bimetric gravity, is a theory of gravity that posits the existence of two interacting and dynamical metric tensors. The spectrum of bimetric gravity consists of …
WebJun 20, 2012 · holes (not bimetric gravity blac k holes) have been studied in the literature only by assuming flat backgrounds [ 22 – 25 ]. In massive gravit y with a conformally flat background metric, our ... WebThe work is carried through in metric gravity for the class of Christoudoulou-Klainermann space-times, in which the temporal evolution is ruled by the {\it weak} ADM energy. The main results of the investigation are the following: 1) A re-interpretation of {\it active} diffeomorphisms as {\it passive and metric-dependent} dynamical symmetries ...
WebFeb 24, 2012 · 581 Citations 16 Altmetric Metrics bstract Generically, non-linear bimetric theories of gravity suffer from the same Boulware-Deser ghost instability as non-linear theories of massive gravity. However, recently proposed theories of massive gravity have been shown to be ghost-free. WebFeb 18, 2016 · Bi-gravity can get very complicated but many of the complications about what the degrees of freedom mean also appear in the standard model, at least in spirit. …
WebGauss's law for gravity. In physics, Gauss's law for gravity, also known as Gauss's flux theorem for gravity, is a law of physics that is equivalent to Newton's law of universal gravitation. It is named after Carl Friedrich Gauss. It states that the flux ( surface integral) of the gravitational field over any closed surface is equal to the mass ...
WebFeb 24, 2012 · bstract Generically, non-linear bimetric theories of gravity suffer from the same Boulware-Deser ghost instability as non-linear theories of massive gravity. … bitcoin crypto voucherBimetric 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 bitcoin crypto slateWebMay 3, 2024 · Ghost-free bimetric gravity is an extension of general relativity, featuring a massive spin-2 field coupled to gravity. We parameterize the theory with a set of observables having specific physical interpretations. daryl ground and associatesWebIn 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 … bitcoin crypto stock price today stockWebIn 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 … daryl gutheilWebBimetric definition: (mathematics, physics) Describing any system that may be described using two metrics. . daryl guppy net worthWebJul 29, 2010 · Gravimetric definition, of or relating to measurement by weight. See more. bitcoin cup and handle