The HawkingHartle Proposal for the Early Universe
There is very substantial agreement as to the development of the universe
from the first 10^{43 }second on:
Traditional Big Bang cosmology allowed the spacetime diagram to arise from
a point, like an icecream cone:
This point was then a socalled ‘singularity’ at which values such as the
density of the universe would go to infinity and the laws of physics could not
hold.
The HawkingHartle proposal allows the time dimension, the vertical axis of
the diagram, to ‘fade away’, to be subsumed into the space dimensions. The
diagram therefore originates not from a point but from a curved surface with no
boundary or edge, like the surface of the Earth at one of the poles:
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Contributed by: Dr. Christopher Southgate
Source: God, Humanity and the
Cosmos (T&T Clark, 1999)
