What is the physics behind the "faster than light expansion" of the universe?

Question

How is it known or theorized that the universe expanded faster than light in the early stages of development?

Answer 1

I don't know the physics behind it, but I have heard that the rate of expansion is increasing not decreasing. So if it was faster than light in the early stages of development, then it must still be expanding faster than light.

Answer 2

Very simple, it can be calculated by our knowledge about quantumn physics and about what is happening to particals at several stages of energy. In those early stages of the big bang (we are talking about periods of time less than a second) energy was on an incredibly high level, so high we don't have anything lik it, not even massive black hole nor super novae have such an energy level ... but we can calculate it. And maths is telling us what probaby had happend at those early stages. However, it cannot be explained by nowadys physics ... because nowadays physics was just about to become valid after the first few seconds of the BB if it ever had happened like that. Therefore, eben though we have our maths and can calculate it somehow, it still remains a theory (or simply spoken an assumption) . The only difference between an assumption and a theory is, that withe a theory you have the maths to prove that it could have been as like as the assumption claimes. And if you have the maths with an assumption, then you call it a theory.

Answer 3

It is not known. The Big Bang Theory is just that; A theory. But the theory behind the "faster than light" expansion of the universe has to do with the fact that the temperature throughout the universe is more or less the same. It is a way scientists can explain why the universe is not significantly hotter towards the center.

Answer 4

"Space-Time" is expanding, matter is along for the ride. Imagine the universe as the surface of a balloon, with two dots beside each other representing galaxies. As the balloon expands the galaxies become further apart, but are not actually moving from their location on the balloon. This is how matter can "move" apart from each other faster than light without actually moving through space faster than the speed of light.

Answer 5

there is alot of specualtion into the techniques this occurs. some has to do with the assumption of relativity and the bending of light. Others think of that quantum physics is the substantial. What we do be attentive to is first that gentle bends, and so does time. gentle is unquestionably the quickest moving situation, yet there are nonetheless obstacles. The greater way the gentle gets from the source, the weaker it turns into. additionally, the universe has been increasing, yet no longer on the comparable velocity it did throughout the time of the super Bang. So there is an end someplace. regardless of the Hubble telescope we are in a position to work out galaxies and photograph voltaic structures hundreds of light years away. on a similar time as we would on no account be waiting to bodily pass to them, we are in a position to word them and use equations to degree their strikes. the greater advantageous technologies we get, the greater we are in a position to work out. some even speculate in quatum physics and the string concept, which you will warp with time or bend it to work out the different end. it could be like taking particularly string and retaining one end next to the different. yet our technologies and information is not any the place close to that yet.

Answer 6

Faster than light motion is not forbidden for objects that are widely separated, it is only forbidden for objects that are close to each other.

How close is "close"? It depends on whether the faster-than-light motion can result in a causality violation. In other words, if two "close" observers are moving faster than light, then some of one observers's past is in the other observers's future, potentially allowing an "effect" to preceed its "cause". This does not happen if the observers are widely separated, and those widely-separated superluminal relative velocities are not forbidden by General Relativity. The vast majority of the Universe is moving away from us "faster than light".

Answer 7

Your question is, as we say in the biz, "ill-posed." The rate of universal expansion is not a speed. It's a speed per distance. So you cannot compare it to a speed such as the speed of light. Currently, the rate of expansion is 71 kilometers per second, per megaparsec. So a galaxy 1 Mpc away recedes at 71 km/s, a galaxy 2 Mpc away recedes at 142 km/s, etc.

So it should be clear that *regardless* of the rate of expansion, some galaxies will be far enough away to recede at greater than c. This is perfectly legal, because the recession of galaxies is not really a speed. The galaxies are not really moving at all. It's space itself that is expanding between them. So between us and a galaxy 1 Mpc away, 71 kilometers of space is spontaneously generated between us every second. The galaxies didn't go anywhere; extra distance got inserted between them.

Same thing with a galaxy that is receding at greater than c; it's not really *going* anywhere. Additional distance is being spontaneously generated between us so that the distance is increasing, but without any real motion.

Answer 8

The only thing I am aware of is the original String Theory which postulates a Tachyon, which is NOT accepted by most scientists because Einstein says nothing can travel faster than light and Einstein has been proven right more often than not.

Answer 9

It is not expanding faster than the speed of light. Any thing traveling faster than the speed of light ,will increase it's mass to infinity .

Answer 10

There is none, faster than light speed in impossible.