G'day from the land of ozzz
Just sharing the reading on this.
Beyond Inflation: A Cyclic Universe Scenario
Neil Turok et al 2005 Phys. Scr. T117 76-85 * doi: 10.1238/Physica.Topical.117a00076*
Neil Turok1,3 and Paul J Steinhardt2
1 Centre for Mathematical Sciences, Wilberforce Road, Cambridge, CB3 0WA, UK
2 Department of Physics, Princeton University, Princeton, NJ 08544, USA
3 Talk given at the Nobel Symposium `String Theory and Cosmology', Sigtuna, 14-19 August 2003
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Could cyclic universe explain mystery? - Space.com- msnbc.com
Could cyclic universe explain mystery?
Theorists suggest Big Bangs and Crunches lead to cosmic balance
Quote:
One of the biggest mysteries in cosmology could be explained by a controversial theory in which the universe explodes into existence not just once, but repeatedly in endless cycles of death and rebirth.
Called the cyclic universe theory, it could potentially explain why a mysterious repulsive form of energy known as the "cosmological constant," which is accelerating the expansion of the universe, is several orders of magnitude smaller than predicted by the standard Big Bang model.
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'Cyclic universe' can explain cosmological constant - space - 04 May 2006 - New Scientist
'Cyclic universe' can explain cosmological constant
Quote:
A cyclic universe, which bounces through a series of big bangs and "big crunches", could solve the puzzle of our cosmological constant, physicists suggest.
The cosmological constant represents the energy of empty space, and is thought to be the most likely explanation for the observed speeding up of the expansion of the universe. But its measured value is a googol (1 followed by 100 zeroes) times smaller than that predicted by particle physics theories. It is a discrepancy that gives cosmologists a real headache.
In the 1980s, physicists considered the possibility that an initially large cosmological constant could decay down to the value measured today. But this theory was abandoned when calculations showed that it would take far longer than 14 billion years - the time since the big bang - for the constant to reach the level seen today.
Now physicists Paul Steinhardt at Princeton University, in New Jersey, US, and Neil Turok at Cambridge University in the UK, are resurrecting the idea. They point out that if time stretches back beyond the big bang, the problem could be solved. At that is just what is predicted by their cyclic model of the universe - an alternative to the Standard Big Bang theory - which the pair first developed in 2002 (see "Cycles of creation").
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Please I'm just sharing the reading.
There are some important issues at hand and one form of a cyclic universe not as a total but as individual parts that can be explained by physics may have something to offer.
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and this paper is interesting
[0801.2965v1] Cosmology and Cosmogony in a Cyclic Universe
Cosmology and Cosmogony in a Cyclic Universe
Authors: Jayant V. Narlikar, Geoffrey Burbidge, R.G. Vishwakarma
(Submitted on 18 Jan 2008)
