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afton
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Why did Big Bang happened in the first place?
Phobos said:There are a few science-based ideas about it, but there's no well-supported/strong theory to explain it. Perhaps some of the other members would like to mention a few of those ideas here.
afton said:Why did Big Bang happened in the first place?
Without a doubt!timken said:Needless to say, there are a few loose ends here.
Well the theory is that spacetime is in a constant state of fluctuation. There are virtual particles appearing and disappearing all around us all the time in numbers that could easily be thought of as infinite. This is the nature of spacetime. Although, the idea that the universe began as a quantum fluctuation does seem to suggest that spacetime fluctuations existed prior to the actual creation of the universe and therefore spacetime itself must have existed. Maybe just not in any permanent form of matter like we see today.timken said:For example, if we started from a random fluctuation wouldn’t there have been a need for space/time to contain the random fluctuation?
I actually think about this a lot.timken said:What’s to stop another random fluctuation happening now within our universe?
The problem with many of these theories is that you need to be more than just a genius. You also need to be highly educated in mathematics, as well as being highly creative in your thinking. Even then you don't get anywhere. But instead of getting headaches you go into some sort of blissful state of euphoria where you don't really care what it all means anymore. You just get high on the mystical elegance of the mathematical symmetries and end up becoming an abstract-junkie.timken said:Questions, questions, I’m getting a headache. Are there any geniuses out there with some suggestions.
I feel the same way about the brane theory. It's just all too speculative. We don't even have any evidence that branes even exist.Chronos said:I don't find brane collisions very satisfactory. Still leaves the question begging 'where did branes come from,...
That may be the case (could you supply a reference regarding QFT and inflation?) but the flat fields of quantum physics and the curved space-time of GR do not play together well. This is a huge problem for the people trying to extend gravity to the quantum level. My (admittedly amateur and math-challenged) readings in this field lead me to believe that when curved space-time is interpreted as "practically" flat on Planck scales, some kinematic models of gravitation might be tenable, but right now, dynamical models of quantum gravitation in a GR framework still seem hopelessly out of reach.NeutronStar said:I feel the same way about the brane theory. It's just all too speculative. We don't even have any evidence that branes even exist.
All I know, (and I could be terribly wrong about this), is that inflation has something to do with the mathematics of QFT and the Higgs field. It's my understanding that QFT predicts inflation somehow.
The exact cause of the Big Bang is still unknown and is a topic of ongoing research and debate among scientists. Some theories suggest that it was triggered by a cosmic event, such as the collapse of a previous universe, while others propose that it was a spontaneous event.
The Big Bang theory suggests that the universe began as a singular point and has been expanding ever since. However, it does not explain what existed before the Big Bang or what lies beyond the observable universe. Some scientists believe that there may be multiple universes beyond our own.
Scientists have gathered evidence for the Big Bang theory through observations of the cosmic microwave background radiation, the abundance of light elements in the universe, and the large-scale structure of the universe. These observations support the idea that the universe was once much smaller and denser, and has been expanding for billions of years.
Science does not deal in absolutes and theories can never be proven with 100% certainty. However, the Big Bang theory is the most widely accepted explanation for the origin and evolution of the universe based on the available evidence. As new evidence is discovered, the theory may be refined or even replaced by a new model.
The concept of time as we know it did not exist before the Big Bang, so the question of what came before is difficult to answer. Some scientists propose that the Big Bang may have been preceded by a period of inflation, while others believe that the universe has always existed in some form. The true answer may never be known.