Re: [Phys-l] Hubble Law

[Calvin Kalman <Calvin.Kalman@CONCORDIA.CA>]

> ----- Original Message -----
> From: "Calvin Kalman" <Calvin.Kalman@CONCORDIA.CA>
>
>
> >  >I've read John's stuff--I'm sure that's my source of  immediate
> >  >recollection
> > > of the below.  My question is why?  Why does the space between galaxy's,
> > > between stars, expand but not the space between molecules, between atoms,
> > > between nucleons?
> > >
> > > Rick
> >
> >  The energy provided through an effective cosmological constant is
> >  released in a phase change to energy bound up in the space time
> >  structure.
> >  --
> I'll have to admit that the above doesn't help much.  Is that just me?  Or
> is there an implied 'smiley' in the above??
>
> Rick

I was trying not to be too technical. Phase changes during which 
forces become "deunified" are associated with Higgs bosons. These 
bosons provide an effective Cosmological constant. This is a term in 
the equations of General Relativity that correspond to a repulsive 
form of gravity. Because of the repulsive nature of this 
gravitational force, it causes all matter to move away; that is 
particles or clumps of particles are repelled. This is the cause of 
the expansion. When the universe was 10^-35 seconds old, it caused an 
enormous expansion according to the theory of inflation and continues 
to drive the universe up to the present day. If present ideas of 
cosmology are correct dark energy is bound up with this effect and at 
present is causing the bodies in the universe to continue to be 
repelled at an accelerated rate.

(I spend a whole course trying to explain all this to gen-ed 
students. Rapid fire summaries are difficult.)
--

Best wishes

                     Calvin


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_/   Calvin S. Kalman, P. Phys.         Phone:  (514) 848-2424 xt 3284
_/  Professor,Department of Physics    Fax:      (514) 848-2828
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_/  Concordia University
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_/ Also Adjunct Professor Department of Educational
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