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Re: cosmology and quantum gravity

or, on a greater scale, when a star (or galaxy?) collapses to create a black hole. These are
(if mem. serves) for what the grav. wave (graviton) detectors are looking. (@ Stanford, etc..)

bc

Mario Diaz wrote:

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Hi,

Zach Wolff wrote:

4. The gravitational effects are mediated by
gravitons.
5. The gravitons that would mediate these effects must
originate within the event horizon.
Zach Wolff

Gravitons are to gravitational radiation what photons are to em.
They're emitted only when there is a relative acceleration of masses.
i.e. a static or stationary Black Hole like a Schwarzschild or Kerr (with
ang. mom.) hole does not
emit grav. waves. So they're no gravitons coming out.
For that to happen matter should be falling into the Black Hole or you got
to have a binary system, where relative acceleration of the masses will
lead to a configuration of the masses that changes with time.
"Gravitons" will then come out as a result of the gravitational energy
loss of the system.
These efffects will be non local and the radiation should not be
interpreted as coming from inside the event horizon...
Hope this helps,
mario

--
***************************************************************
Mario Diaz
Associate Professor of Physics-Department of Physical Sciences
Interim Chair - Department of Engineering Technology
University of Texas at Brownsville
mdiaz@utb1.utb.edu Voice:956-5746641 FAX: (956) 574-6692
http://utopia.utb.edu/mario
***************************************************************

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<html>
Hi,
<p>Zach Wolff wrote:
<blockquote TYPE=CITE>4. The gravitational effects are mediated by
<br>gravitons.
<br>5. The gravitons that would mediate these effects must
<br>originate within the event horizon.
<br>Zach Wolff</blockquote>
Gravitons are to gravitational radiation what photons are to em.
<br>They're emitted only when there is a relative acceleration of masses.
<br>i.e. a static or stationary Black Hole like a Schwarzschild or Kerr
(with ang. mom.) hole does not
<br>emit grav. waves. So they're no gravitons coming out.
<br>For that to happen matter should be falling into the Black Hole or
you got to have a binary system, where relative acceleration of the masses
will lead to a configuration of the masses that changes with time.
<br>"Gravitons" will then come out as a result of the gravitational energy
loss of the system.
<br>These efffects will be non local and the radiation should not be interpreted
as coming from inside the event horizon...
<br>Hope this helps,
<br>mario
<pre>--&nbsp;
***************************************************************
Mario Diaz&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Associate Professor of Physics-Department of Physical Sciences
Interim Chair - Department of Engineering Technology&nbsp;
University of Texas at Brownsville
mdiaz@utb1.utb.edu&nbsp;&nbsp;&nbsp; Voice:956-5746641&nbsp;&nbsp;&nbsp; FAX: (956) 574-6692
<A HREF="http://utopia.utb.edu/mario";>http://utopia.utb.edu/mario</A>
***************************************************************</pre>
&nbsp;</html>

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