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 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

Strong lensing constraints on bimetric massive gravity

WebSep 21, 2024 · In bigravity, gravitational interactions are mediated by two gravitons, one of which has mass and the other of which is massless. The two gravitons are composed of different combinations (or... http://export.arxiv.org/abs/1109.3515 impact factor of acs applied bio materials

The nature of spacetime in bigravity: Two metrics or none?

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. … WebSep 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. WebThe 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: listserv review command