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Article #8384

Re: zero dimensional particles with mass

#8384
From: Dries van Oosten
Date: Mon, 24 Mar 1997 00:00
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On 23 Mar 1997, Haplo wrote:

> >> Actually we're already at that _point_ now (pun intended). It's beginning
> >> to look like there is nothing smaller than quarks and leptons. Quarks are
> >> the class of particles that make up protons and neutrons. Leptons are the
> >> class of particles which we normally call electrons and neutrinos.
> >> 
> >> They've been trying to find the smallest size of these particles by
> >> bouncing them off of each other. The more energy you put into the
> >> projectiles, the harder it's going to hit, and the closer it's going to get
> >> to its centre. So far, they've been increasing and increasing the energy
> >> against these particles and still haven't found a limit to how close they
> >> can get. This means that it looks like quarks and leptons are perfect
> >> mathematical points, zero-dimensional. You can't get much smaller than
> >> absolute zero.
> >
> This is not right. The quantum theorie clearly states that you cannot
> know the exact location and velocity of a particle at the same time
> (at least not precisely. If you know one very accurate, the other gets
> almost unpredictable)
> If it would be points, you would know both of those at the same time.
> The new theorie is the harmonic string theorie (by Stephen Hawking)

This theory is not just by Stephen Hawking. A lot of people are working on
it and the original concept of strings or supersymmetry was not invented
by mr Hawking. (our own mr. Dijkgraaf has put a lot of work in this too,
Ivo)

> which says that every particle can be seen as a very small resonating
> string instead of a particle.
> Also perfect singularities (such as the big bang singularity) are
> impossible to exist, for the exact same reason. Hawkings theorie
> indicates that time (just A (not the) possible manifestation of the
> 4th dimension of space) has no beginning and no end. The beginning and
> end of the universe should be sought after in higher dimensions.

Not exactly. He says that space-time is something like a hyper-ball. It
has no beginning or end, but it is finite. It does not involve even higher
dimensions.

> 
> Ivo
> 
> 


Dries van Oosten

Eat any good books lately?
                           
  
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From: Dries van Oosten <dvoosten@fys.ruu.nl>
Subject: Re: zero dimensional particles with mass
Date: 1997/03/24
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