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From: wmartin@brl-tgr.ARPA (Will Martin )
Newsgroups: net.books,net.sf-lovers,net.physics
Subject: Re: Procyon's Promise & antimatter black holes
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Date: Thu, 8-Aug-85 15:43:09 EDT
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Posted: Thu Aug  8 15:43:09 1985
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I was thinking about the "anti-matter vs. matter" qualities of what is
inside a black hole, and, at first, was going to agree with the
contention that, no matter the nature of the matter that formed the
black hole, once falls inside, it loses those qualities and becomes like
unto the primordial ylem (do physicists still use that term?) or at least
undefinable.

Then I thought of the contentions that I have read that the entire
observable universe could be inside a black hole. Since the radius goes
up with the mass, the average density of a hole with the universe's mass
is rather close to the real average density of the universe... So this
would have to depend then on the mass of the black hole, would it not?
After all, a black hole containing our universe could be orbiting a
black hole containing an anti-matter universe... 

If the black hole is small enough, then the mass/density ratio would not
let subatomic "particles" exist anymore -- I don't know if that means it
would be a squish of quarks or if even quarks would have ceased to be
distinct -- and then the "matter"-ness or "antimatter"-ness of the
contents would no longer be definable, since that is a characteristic of
a higher level of particle than could exist in there. There must be some
magic size point, though, when the mass is large enough that the average
internal density allows "normal" particle formation inside. I have no
idea what would determine what particles would form in this environment.

Gee, this stuff is fun! Now, if I only knew what I was talking about...

Regards, Will