i also know that just after the singularity it was just pure energy, nothing else, but i thought Energy can not be made ?? I like the idea of the universe having a beginning though otherwise all the stars would have been burnt out by now if it was infinite...
It wasn't pure energy, it just possessed a significant amount of energy.
There were still particles. However, because this is the realm of Quantum Field Theory, the states of particles were significantly more complicated.
For instance it would be difficult to separate out a free electron.
Could all you peeps please tell me your personal theories on how you think the Universe started & why.... im really looking forward to your answer’s...
Personally, I think that whatever the singular event was, whose aftermath the Big Bang models, it'll just slap a massive "N/A" across words like "started" and "began".
For instance when we put Quantum Field Theory inside General Relativity, we get the result that accelerating observers don't agree with inertial ones over what is a single particle and what isn't.
Or what’s a vacuum and what isn't.
Not to mention GR says in some situations what I call an angle in space you could call time.
Add this to all of Quantum Mechanics' weirdness and I can't imagine what the pre-Big Bang regime will bring.
Chiroptera writes:
Heh. I'm just trying to defuse the "Big Bang says the universe exploded from nothing" notion.
Absolutely, it's way too common and damaging a misconception about the Big Bang, as it allows easy ridicule. So it's good to be careful.