How fast was the Universe expanding immediately after the Big Bang?

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Offline genie_us

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with my limited knowledge in that branch of science, i am struggling to understand this that

According to modern bang bang theory, during early stages, universe went through process of inflation which saw universe expand faster than speed of light. The process of expansion then slowed down with time.

But as we currently know, universe is expanding at an increasing rate and dark energy is known to be the cause of this repulsion, the bit which is confusing me is that if dark energy had existed from start , how speed of expansion could have slowed down, because dark energy would been pushing matter away from very start, so the period of inflation should never have stopped.
OR did dark energy came into being at a later stage ? Did universe stop expanding at one stage, got stationary and then dark energy starting pushing it again, at an increasing speed ?
« Last Edit: 24/11/2011 22:18:17 by chris »