Ron:
do you believe there are non-virtual gravitons?
John Mikes
----- Original Message ----- 
From: "Ron McFarland" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Wednesday, February 25, 2004 9:24 PM
Subject: Re: Black Holes and Gravity Carrier


> Combine my response to 2 responses <grin>...
> 
> On 17 Feb 2004 at 21:39, Fred Chen wrote:
> > Nice link, great topic.
> > 
> > This does beg the question, is there an event horizon for gravitons,
> > and presumably the answer for that would be the singularity.
> > 
> > Here is something to ponder: do virtual gravitons generate more
> > virtual gravitons? Consider a planet in circular orbit around its
> > star.  Consider the gravitational force of this system on an external
> > body far away, e.g., a comet. The force on the comet would be due to
> > the mass of the planet, plus the mass of the star, plus the
> > gravitational energy of the star-planet system. So the gravitational
> > field, an exchange of virtual gravitons, would be the source of new
> > virtual gravitons to be exchanged with the comet, or in fact anything
> > outside this system. This could extrapolate ad infinitum, as we take
> > into account each virtual exchange of gravitons generating another
> > virtual exchange of gravitons.
> > 
> > Fred
> > 
> 
> Interesting conjecture! I alludeto it, below...
> 
> And also heard...
> From: "Hal Finney" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Monday, February 16, 2004 4:30 PM
> Subject: Re: Black Holes and Gravity Carrier
> 
> > Ron McFarland writes:
> >>If a gravity carrier has any mass whatsoever then by what mechanism
> >>could it possibly and in such abundance escape from a black hole
> >>event horizon and make itself known in our observable universe?
> >
> > This is not really a multiverse question, but rather a common query
> > relating to relativity and QM.  See question 6 in part 2 of the
> > sci.physics FAQ, "How does the gravity get out of the black hole?",
> > at:
> >
> > http://www.faqs.org/faqs/physics-faq/part2/
> >
> > The short answer is that when you model forces as the exchange of
> > particles, it is actually done as the exchange of virtual particles;
> > and virtual particles can go faster than light, hence can escape
> > from black holes.
> >
> > Hal Finney
> 
> Yes, but particles are not virtual if they do not recombine
> and annihilate. 
SNIP

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