Bimetric gravity
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 choice of a comoving frame for the metric ĝ μν or g μν has fundamental physical consequences for local observers in either metric spacetimes, while maintaining diffeomorphism invariance. WebSep 16, 2011 · Bimetric Gravity from Ghost-free Massive Gravity S. F. Hassan, Rachel A. Rosen Generically, non-linear bimetric theories of gravity suffer from the same …
Bimetric gravity
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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 ... 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 a massless and a massive spin-2... Skip to main content We gratefully acknowledge support fromthe Simons Foundation and member institutions. >gr-qc>arXiv:2303.11353v1
http://export.arxiv.org/abs/1109.3515 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 …
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 … WebJun 16, 2024 · Bimetric gravity is a ghost-free and observationally viable extension of general relativity, exhibiting both a massless and a massive graviton. The observed …
WebDec 11, 2024 · 1 Massive and Bimetric Gravity Considering gravity in the field-theoretical framework, a natural theoretical question arises to whether the graviton particle itself could be a massive particle. In the same way as the particles in the standard model acquire a mass, could the spin-2 particle be endowed with a mass term?
WebFeb 15, 2011 · @article{osti_21579843, title = {Bimetric renormalization group flows in quantum Einstein gravity}, author = {Manrique, Elisa and Reuter, Martin and Saueressig, Frank}, abstractNote = {Research Highlights: > Gravitational Effective Action in the bimetric truncation. > First study of the full gravitational flow with a bimetric structure. > The non … bio kinetic filterWebThe Hasan-Rosen formulation of bimetric gravity can schematically be written as [1]: L b i = L g + L f + L i n t. where L g is the Einstein-Hilbert action for metric g μ ν and similarly for metric f μ ν. The interesting part really lies in the interaction term. This interaction term can schematically be written as: biokinesis how toWebIn 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 … bio kinetic hair productsWebSep 2, 2015 · Bimetric gravity Bigravity “The reports of my death have been greatly exaggerated.” — Metrics Twain 1. Introduction The Standard Model of particle physics contains fields with spins 0, 1/2, and 1, describing matter as well as the strong and electroweak forces. biokinesis sorte extremaWebJun 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 ... bio kinetic hair products stockistsWebFeb 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. … biokinesis researchWeb* Idea: A theory of gravity with two distinct metrics, a gravitational gab which describes the geometry of spacetime and controls the speed of gravity, and a matter metric γab which … biokinesis powerlisting