Bimetric gravity
WebTitle: Bimetric-Affine Quadratic Gravity Authors: Ioannis D. Gialamas, Kyriakos Tamvakis. Comments: 11 pages, 2 figures Subjects: General Relativity and Quantum Cosmology (gr-qc); Cosmology and Nongalactic Astrophysics (astro-ph.CO); High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Theory (hep-th) 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 ...
Bimetric gravity
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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 ... WebNov 1, 2024 · Bimetric gravity is a ghost-free and observationally viable extension of general relativity, exhibiting both a massless and a massive graviton. The observed …
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 … Theories of gravity can be classified, loosely, into several categories. Most of the theories described here have: • an 'action' (see the principle of least action, a variational principle based on the concept of action) • a Lagrangian density
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. … WebSep 16, 2011 · Generically, non-linear bimetric theories of gravity suffer from the same Boulware-Deser ghost instability as non-linear theories of massive gravity. However, …
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. …
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 … df wolf\\u0027s-baneWebFeb 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. dfw off site parkingWebOct 4, 2013 · In order to have background solutions resembling the concordance cosmological model, without fine-tuning of the parameters of the model, we are restricted to the upper interval, or λ g / r H ~ 1, for which the Vainshtein mechanism is expected to restore general relativity for local sources. dfw oldies radio stationWebMar 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 df wolf\u0027s-banehttp://export.arxiv.org/abs/1109.3515 dfw offsite parking optionsWebOct 4, 2013 · We derive dynamical and gravitational lensing properties of local sources in the Hassan-Rosen bimetric gravity theory. Observations of elliptical galaxies rule out … dfw off road trailsWebSep 16, 2011 · Bimetric Gravity from Ghost-free Massive Gravity S. F. Hassan, Rachel A. Rosen (Submitted on 16 Sep 2011 ( v1 ), last revised 3 Apr 2012 (this version, v2)) Generically, non-linear bimetric theories of gravity suffer from the same Boulware-Deser ghost instability as non-linear theories of massive gravity. dfw omicron