In an episode of Discovery's Curiosity with host Stephen Hawking, he claims the Big Bang event can be explained from physics alone, and does not require the intervention of a creator.
1) His argument is based on that, in the beginning, the universe is an equivalent of a black hole behaving as a quantum mechanical particle that can simply "appear" like a Helium particle in alpha radiation. For a large gravitational field like the black hole in question, time did not exist, and therefore there could not exist a being to create the Big-Bang, since time did not exist.
2) During the Big-Bang, positive energy appeared and negative energy was stored in space, and the net energy created is zero and therefore nothing was created.
I am curious on the foundations of Hawking´s claims in the episode.
Is the Big-Bang black hole really modeled as a quantum mechanical particle? Was there really a black-hole at all? What is the resulting entropy change of this black-hole during an event such as the Big-Bang? Are his claims of negative energy stored in space sound or well accepted?