Re: Question for Cosmologists

On 1/12/06, Don Nield <d.nield@auckland.ac.nz> wrote:
> Rich Blinne wrote:
>
> > Note the following story in New Scientist
> > <http://www.newscientistspace.com/article.ns?id=dn8566&feedId=online-news_rss20>:
> >
> > Dark energy – the mysterious force that drives the acceleration of the
> > universe – changes over time, controversial new calculations suggest.
> > If true, the work rules out Einstein's notion of a "cosmological
> > constant" and suggests dark energy, which now repels space, once drew
> > it together. [emphasis mine]
> >
> > My question for the cosmologists on this group is as follows: Does
> > this not imply that inflation is incorrect and by extension so is the
> > multiverse explanation of fine-tuning?
>
> My answer (as an amateur cosmologist) is Rich's question is "no". There
> is no such implication. The report in the New Scientist is concerned
> with changes over a few billion years, disjunct from the very short
> interval over which inflation is postulated to have occured.
> Don
>
>
Thanks. But, it would mean that dark energy would be repulsive,
attractive and, then repulsive again?
Received on Fri Jan 13 00:04:25 2006