WebAug 25, 2024 · A chameleon field with these morphing properties could drive the accelerating expansion of the universe without disagreeing with measurements on Earth. … Web2 Field Equations and Results : The relevant action is. A = ∫ [ R 16πG+1 2ϕ,μϕ,μ−V (ϕ)+f (ϕ)Lm] √−g d4x , (1) where R is the Ricci scalar, G is the Newtonian constant of gravity and ϕ is the chameleon scalar field with a potential V (ϕ) . Unlike the usual Einstein - Hilbert action, the matter Lagrangian Lm is modified as f (ϕ ...
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WebMar 20, 2010 · Abstract. In the present work, it is shown that a chameleon scalar field having a non-minimal coupling with dark matter can give rise to a smooth transition from a decelerated to an accelerated phase of expansion for the Universe. It is surprising to note that the coupling with the chameleon scalar field hardly affects the evolution of the dark ... WebWheat grows in a field owned by Stefan Soloviev, heir to a $4.7 billion fortune, in Tribune, Kansas, U.S., on Tuesday, July 9, 2024. Over the past... cattle in dry outdoor kansas … hoyts online movies
Chameleon screening depends on the shape and structure of …
WebFeb 1, 2013 · The chameleon scalar field is considered as a possible cause of accelerated expansion of the Universe. The chameleon field induces an interaction potential between a particle and a massive body. WebChameleons spend their life in trees and bushes. Most lizards have five toes, but the chameleon's five toes are modified into groups: on the forefoot, the two outside toes are joined to form one group, and the three … WebIn this paper, we explore the homogeneous and isotropic flat Friedmann–Robertson–Walker (FRW) model in Chameleon cosmology. By considering a non-minimal coupling between the scalar field and matter, we present a non-singular bouncing cosmological scenario of … hoyts onyx