The Early Universe:
All our understanding of the very early universe (cosmogony) is speculative. No accelerator experiments currently probe sufficiently high energies to provide insight into this period. Scenarios differ radically. Some ideas include the Hartle-Hawking initial state, string landscape, brane inflation, string gas cosmology, and the ekpyrotic universe. Some of these ideas are mutually compatible, others are not.
The Planck epoch: 10-43 second
If supersymmetry is correct, then at this time the four fundamental forces – electromagnetism, weak nuclear force, strong nuclear force and gravity – all have the same strength, so they are possibly unified into one fundamental force. Little is known about this epoch, although different theories make different predictions.
So where did the electromagnetism, weak nuclear force, strong nuclear force and gravity come from. Did they just poof out of nowhere? Did someone create them? How did the universe start?
2007-02-15
02:11:49
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17 answers
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asked by
Bryan
2