Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2001-11-04
Physics
High Energy Physics
High Energy Physics - Theory
15 pages, 1 figure, revisions as published
Scientific paper
10.1126/science.1070462
We propose a cosmological model in which the universe undergoes an endless sequence of cosmic epochs each beginning with a `bang' and ending in a `crunch.' The temperature and density are finite at each transition from crunch to bang. Instead of having an inflationary epoch, each cycle includes a period of slow accelerated expansion (as recently observed) followed by slow contraction. The combination produces the homogeneity, flatness, density fluctuations and energy needed to begin the next cycle.
Steinhardt Paul J.
Turok Neil
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