tombi123 said:
One theoretically possible explaination for the origin of matter is from a vacuum fluctuation. It is common knowledge in the physics community that particles and anti-particles get created out of nothing, exist for a certain time and then collide and destroy each other in a flash of light (emitting a photon). This happens billions of times every second. As long as they obey this formula: E * T = h (where E is energy, T is time and h is Planck's constant) creating particles out of nothing is allowed. To extend this to the origin of the universe, you could say that as long as the net energy in the universe is close to zero, then the universe can be created out of nothing for a very long time. The positive energy is what causes the universe to expand and the negative energy is what causes the universe to contract (gravity). If the value of the density of the universe is at the critical density, then the net energy is zero and the universe can exist for an infinite amount of time. If it is very close to the critical density then the universe can exists for a very long time but will eventually contract in on itself or tear itself apart. |
First of all I believe in the future scientists will say it was unfortunate, and dumb, to say (now, early in the 21st century) that particles are created "from nothing". They will then have discovered and confirmed the strings (or something else) and say that the apparent creation of matter/energy from "nothing" really was reorganization or reactions between strings.
I think one is really stupid if one thinks the explanation you cited is satisfying for the fundamental question of why the Big bang came to be, or why anything exists at all.
Second of all, even if stuff could be formed out of "nothing" it still don't explain the cause.








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