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popopop
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I am wondering what were the conditions before the big bang
Snazzy said:What came before time?
popopop said:I am wondering what were the conditions before the big bang
Snazzy said:This is a meaningless question that we'll never know the answer to.
GRB 080319B said:This is one possible theory: http:////www.physorg.com/news102516861.html"
Poop-Loops said:And that's why it's meaningless. "Time" itself is the arrow, and you are trying to use the rules of time while detaching yourself from it. It just doesn't work.
popopop said:Im thinking time was not present before the big bang
popopop said:I am wondering what were the conditions before the big bang
popopop said:IM haveing trouble with totally accepting that time exist (present?) I cannot see that it has an instant of the present.but a speculative past-future.It does make sense that time would exist pre big bang if it exist now
H.M. Murdock said:Quantum Loop Gravity proposes a radical idea, it says that space and time may not be continuous but it claims that space comes in descrete small lumps called quantum of spacetime that are of the side of 10–99 cubic centimeter.
This theory propose that time is created by the "move" that takes place on this quantum of spacetime.
Time flows not like a river but like the ticking of a clock, with “ticks” that are about as long as the Planck time:10–43 second. Or, more precisely, time in our universe flows by the ticking of innumerable clocks in a sense, at every location in the spin foam where a quantum of spacetime “move” takes place, a clock at that location has ticked once.
The difference in time from one tick to the next is approximately the Planck time, 10–43 second. "But time does not exist in between the ticks"; there is no “in between,” in the same way that there is no water in between two adjacent molecules of water.
So perhaps time may not be continuous after all it may all just be a consequenze of having space.
mormonator_rm said:Well, we have indeed quantized just about everything else in this universe, so why not quantize time as well?!
H.M. Murdock said:I guess they will try to quantize the counciouness or the feelings as well in the future.
popopop said:I am wondering what were the conditions before the big bang
I have not seen anyone give an explanation of how long these two branes have been wandering around in the bulk prior to contact or prior to inflation.One model suggests that two branes collide with each other.
popopop said:I am wondering what were the conditions before the big bang
In this lecture, I would like to discuss whether time itself has a beginning, and whether it will have an end. All the evidence seems to indicate, that the universe has not existed forever, but that it had a beginning, about 15 billion years ago. This is probably the most remarkable discovery of modern cosmology. Yet it is now taken for granted. We are not yet certain whether the universe will have an end. When I gave a lecture in Japan, I was asked not to mention the possible re-collapse of the universe, because it might affect the stock market. However, I can re-assure anyone who is nervous about their investments that it is a bit early to sell: even if the universe does come to an end, it won't be for at least twenty billion years. By that time, maybe the GATT trade agreement will have come into effect.
This will mean that the graph of the separation of two galaxies will bend downwards, below the straight line. So the time of zero separation, would have been less than twenty billion years ago.
At this time, the Big Bang, all the matter in the universe, would have been on top of itself. The density would have been infinite. It would have been what is called, a singularity. At a singularity, all the laws of physics would have broken down. This means that the state of the universe, after the Big Bang, will not depend on anything that may have happened before, because the deterministic laws that govern the universe will break down in the Big Bang. The universe will evolve from the Big Bang, completely independently of what it was like before. Even the amount of matter in the universe, can be different to what it was before the Big Bang, as the Law of Conservation of Matter, will break down at the Big Bang.
Since events before the Big Bang have no observational consequences, one may as well cut them out of the theory, and say that time began at the Big Bang. Events before the Big Bang, are simply not defined, because there's no way one could measure what happened at them.
The pre big bang condition refers to the state of the universe before the big bang event that is believed to have initiated the expansion of the universe. It is a theoretical concept as our current understanding of physics cannot fully explain what existed before the big bang.
There are various theories about the pre big bang condition, and some propose that it was a singularity, while others suggest it was a different state of the universe. The concept of a singularity suggests an infinitely dense and hot point, which is still debated among scientists.
Since the pre big bang condition is a theoretical concept, it cannot be studied directly. However, scientists use mathematical models and theories, such as general relativity and quantum mechanics, to try to understand the conditions that existed before the big bang.
Inflation is a theory that suggests the universe underwent a rapid expansion in the first fractions of a second after the big bang. Some scientists believe that inflation could also explain the conditions of the pre big bang, such as the uniformity of the cosmic microwave background radiation.
Some theories propose the concept of a cyclical universe, where the big bang is just one of many cycles of expansion and contraction. In this case, there could have been multiple pre big bang conditions before each cycle, but this is still a topic of debate among scientists.