Strong energy condition
WebNov 5, 2015 · Nitpick: whether or not gravity is attractive or repulsive in GTR depends on whether strong energy condition holds for the matter that generates it. The accelerating cosmic expansion is an example of gravitational repulsion, as dark energy does not satisfy that condition. – Stan Liou Nov 5, 2015 at 21:01 Add a comment 1 WebWhether it is a spill clean up, equipment cleaning, tank and pressure vessel cleaning, fracs or steaming our units are the perfect choice. Status Energy is also pleased to offer the use …
Strong energy condition
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WebMar 7, 2024 · Strong energy condition and the repulsive character of f ( R) gravity Abstract. The Raychaudhuri equation enables to examine the whole spacetime structure without … WebJan 15, 2010 · @article{osti_21413387, title = {Closed cosmological models that satisfy the strong energy condition but do not recollapse}, author = {Calogero, Simone and Heinzle, J Mark}, abstractNote = {We show the existence of a rather general class of closed cosmological models of Bianchi type IX that do not exhibit recollapse but expand for all …
WebThe dominant energy condition is a slightly stronger condition but still physically acceptable. It ensures the fact that you cannot travel faster than light. If it is violated there … Web2 days ago · Well, that was quick! Just two months ago I was writing about La Niña for what seemed like the 97 th month in a row, and then by March La Niña had departed. Today we’re hoisting an El Niño Watch, meaning that conditions are favorable for the development of El Niño conditions within the next 6 months.In fact, there’s a 62% chance of El Niño …
WebSuppose the strong energy condition holds in some region of our spacetime, and let be a timelike geodesic unit vector field with vanishing vorticity, or equivalently, which is hypersurface orthogonal. For example, this situation can arise in studying the world lines of the dust particles in cosmological models which are exact dust solutions of ... WebHowever, the energy conditions on which these theorems are based on, are beginning to look at less secure if one takes into accounts quantum effects which can violate these energy conditions. Even there are classical systems that can violate these energy conditions which would be problematic in validation of those theorems.
WebMay 1, 2024 · Here, “reasonable” means that the space–time does not possess causal irregularities – such as closed time-like curves – and matter obeys a strong energy condition, so that the presence of matter focuses neighbouring geodesics (the shortest lines between points on a curved surface) towards each other.
Webthe strong energy condition holds and the geodesic congruence is timelike. When these hold, the divergence becomes infinite at some finite value of the affine parameter. Thus … smart fit baixarWebStrong energy condition and complexity growth bound in holography Run-Qiu Yang1, 1Quantum Universe Center, Korea Institute for Advanced Study, Seoul 130-722, Korea This paper proves that if eternal neutral black holes satisfy some general conditions and matter elds only appear in the outside of the Killing horizon, the strong energy condition ... hillman hunting bootsWebThe mission of Energy Strong is to unify the blue and white-collar professionals of Oil and Gas, while fostering community among the Oil and Gas workforce, the supporting-industry … smart fit anahuacWebOct 5, 2024 · The Strong Energy Condition in General Relativity 1. In GR, gravity is always attractive. 2. The SEC requires that gravity should always act in an, 'attractive' manner. 3. … hillman husky for sale craigslistWebThe strong energy condition (SEC) requires that Y ≡ ρ+ pr + 2p⊥ ≥ 0. Meanwhile, in the static region T k k − T t t = Y and we see from ( 8 ), ( 9) that in each of static regions in our … smart fit animolWebSep 8, 2024 · An energy condition establishes a focussing effect for geodesics, while a causality condition removes the possibility of closed timelike curves and a boundary or initial condition establishes the existence of some trapped region of spacetime. hillman hunter holbay engineWebJun 7, 2016 · Strong energy condition and the repulsive character of f (R) gravity. The Raychaudhuri equation enables to examine the whole spacetime structure without … smart fit angeloni