horizon problem造句

• Such problems include the horizon problem and the flatness problem.
• :This universe doesn't have a horizon problem.
• Two weeks later, Guth heard colleagues discussing something called the horizon problem.
• These theories were motivated partly be the desire to avoid the " horizon problem " without invoking inflation.
• This diagram shows that you don't need anything to move faster than light to solve the horizon problem.
• Since the directions of expansion and contraction varied, presumably given enough time the horizon problem would get solved in every direction.
• One of the most common creationist criticisms of the Big Bang concerns the horizon problem and supposed problems with the inflationary theory of the early Universe.
• The Steady State theory did not have the horizon problem of the Big Bang because it assumed an infinite amount of time was available for thermalizing the background.
• Cosmic inflation also addresses the " horizon problem " in the CMB; indeed, it seems likely that the universe is larger than the observable particle horizon.
• In the early 1970s Zeldovich noticed the flatness and horizon problems of Big Bang cosmology; before his work, cosmology was presumed to be symmetrical on purely philosophical grounds.
• There is no known way to solve the horizon problem with variation of the fine-structure constant, because its variation does not change the causal structure of spacetime.
• When challenged about a possible horizon problem in his model, Hartnett deferred to an inability to understand the problem posed by his critic and did not oblige an answer.
• This inflation of the light cones makes them flare and cross themselves, thereby allowing a causal connection between any two points, and solving the horizon problem ( see also ).
• Once singularities are resolved, the conceptual paradigm of cosmology changes and one has to revisit many of the standard issues e . g ., the " horizon problem "  from a new perspective.
• See # Black hole horizon problems below . ( In the archives, might be in a different week, not sure . )-- Trovatore 02 : 52, 26 April 2006 ( UTC)
• This would explain the horizon problem ( since distant regions of the expanding universe would have had time to interact and homogenize their properties ), and is presented as an alternative to the more mainstream theory of cosmic inflation.
• It has a lot of diagrams similar to this one, illustrating changes of coordinates, the horizon problem, and inflation, among other things .-- talk ) 06 : 36, 28 September 2010 ( UTC)
• This idea is paired her desire to understand mathematical solutions of the problems of well-posedness and regularity, stabilization and stability, and optimal control for finite or infinite horizon problems and existence and uniqueness of associated Riccati equation s.
• The infinite horizon problem ( i . e ., LQR ) may seem overly restrictive and essentially useless because it assumes that the operator is driving the system to zero-state and hence driving the output of the system to zero.
• The horizon problem of big bang cosmology says that, without inflation, perturbations were never in causal contact before they entered the horizon and thus the homogeneity and isotropy of, for example, the large scale galaxy distributions cannot be explained.