Science catches up to the New Sun

brunians at brunians.org · 13 Dec 2008, 00:38 · from 2008-December.txt.gz

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From: brunians at brunians.org (brunians at brunians.org)
Date: Fri, 12 Dec 2008 19:38:58 -0500 (EST)
Subject: (urth) Science catches up to the New Sun
In-Reply-To: <273409710812121603t299e1fa7ie7045e06c4a43bae at mail.gmail.com>
References: <273409710812121603t299e1fa7ie7045e06c4a43bae at mail.gmail.com>
Message-ID: <50418.66.126.239.225.1229128738.squirrel at brunians.org>

The Big Bang is so Twentieth Century.

Steady-state forever!


.


> I'm pretty sure this isn't the first time this theory has been bandied
> about, but this sounds pretty much like the cosmology of the New Sun,
> except
> it's been posited as reality:
>
>
>
> Most cosmologists believe that our universe emerged from a singularity
> during the Big Bang. But now physicists are exploring the possibility that
> our universe was created by the death of an earlier universe.
>
> Martin Bojowald and Abhat Ashtekar began researching their theory of loop
> quantum cosmology (LQC), an approach to cosmology that combine's
> Einstein's
> theory of gravity with quantum mechanics. They have modeled the birth of
> our
> universe, exploring the mathematics of universe as it contracts back
> toward
> its point of origin.
>
> Bojowald's major realisation was that unlike general relativity, the
> physics
> of LQC did not break down at the big bang. Cosmologists dread the
> singularity because at this point gravity becomes infinite, along with the
> temperature and density of the universe. As its equations cannot cope with
> such infinities, general relativity fails to describe what happens at the
> big bang. Bojowald's work showed how to avoid the hated singularity,
> albeit
> mathematically. "I was very impressed by it," says Ashtekar, "and still
> am."
>
> The researchers have found that when applying LQC, the universe does not
> revert back to a singularity as it contracts. Instead of seeing a big
> bang,
> the models indicate that the universe experienced a big bounce, with a
> predecessor universe contracting as it ended and then reemerging as our
> new,
> expanding universe. If the theory proves correct, it could mean that our
> universe does not have a finite beginning and end but is, instead, part of
> a
> chain of universes that expand and then contract to give way to a brand
> new
> universe.
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