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Old 06-18-2009   #29 (permalink)
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Re: Eternal Generation Cosmology?

G'day from the land of ozzzz


Kharakov said


Quote:
I think the idea* could be perceived as a "contraction" of matter/energy's wavelengths compared to the total amount of space, but that isn't exactly the idea I was trying to describe, and may have implications that would be disastrous for the validity of the idea itself (especially if the idea of matter/energy contracting becomes a central feature of the idea).

In my opinion I would not worry about space, but I think your on track with contraction of matter and all its phases.

You may find these papers interesting.

I'm not trying to prove a point, just sharing the reading.

[0903.4938] Thermal Fluctuations and Bouncing Cosmologies
Thermal Fluctuations and Bouncing Cosmologies

Authors: Yi-Fu Cai, Wei Xue, Robert Brandenberger, Xinmin Zhang
(Submitted on 28 Mar 2009)

Quote:
Abstract: We study the conditions under which thermal fluctuations generated in the contracting phase of a non-singular bouncing cosmology can lead to a scale-invariant spectrum of cosmological fluctuations at late times in the expanding phase. We consider point particle gases, holographic gases and string gases. In the models thus identified, we also study the thermal non-Gaussianities of the resulting distribution of inhomogeneities. For regular point particle radiation, we find that the background must have an equation of state $w = 7/3$ in order to obtain a scale-invariant spectrum, and that the non-Gaussianities are suppressed on scales larger than the thermal wavelength. For Gibbons-Hawking radiation, we find that a matter-dominated background yields scale-invariance, and that the non-Gaussianities are large. String gases are also briefly considered.

and

Penrose model and how to analyze alternatives to the conventional big bang
00/2008

Penrose model and how to analyze alternatives to the conventional big bang

Quote:
We present the Penrose model of a big bang, with black holes collecting matter far in the future and re cycling the collected matter/ radiation via a conformal mapping to a new big bang, as well as present an alternative to this Penrose scheme which may have some merit. This is compared to Smoot's table of results with computational bits for cosmological evolutionary complexity, as well as presenting how a 5 dimensional instanton may factor in for transfer of energy/ matter from a prior to the present universe along the lines of instaton physics presented in Wesson's reference on modern Kalusa-Klein theory
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