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. 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?
Bimetric gravity - Wikipedia
Web* 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 … 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: browser restart required
Quantum phase space description of a cosmological minimal
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, … 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 … WebSep 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. evil laughing roblox sound id