| Topic: |
Science > Physics |
| User: |
"Jack Sarfatti" |
| Date: |
09 Jan 2004 04:16:57 PM |
| Object: |
Defending Einstein and Elegant Tailor's Fabric |
Paul
I just read Ohanian & Ruffini's 1.9 and it completely supports my
position and not yours IMHO.
My position is:
1. Einstein's original equivalence principle ~ 1915 is fine and there is
no internal contradiction in the concepts of General Relativity.
Locally the gravity g-force is indistinguishable from an inertial force
that in Newton's mechanics would be an artifact of a non-inertial
accelerating frame like Coriolis and centrifugal forces for observers
stuck on surface of rotating Earth for the former or in one of those
Coney Island rides in the latter case.
Whether or not the local curvature tensor vanishes is irrelevant to the
above.
2. Yes, you can use an "idea" droplet with zero surface tension to
locally measure components of the 4th rank curvature tensor. Those
dropets are in free fall mind you. Logically they are equivalent to
pairs of point test particles each in free fall or float without any
g-force on either! That's exactly why the shape of droplet deforms!
I see no internal consistency at all and I see no need to write
Connection field = Real Gravity Tensor Part + Fake Gravity Non-Tensor Part.
You CAN do that, but the distinction has no utility at the next
curvature tensor level where the two pieces above mix together!
3. You need to invoke curved space-time globally in order to preserve
the consistency of 1 as is shown clearly in Hawking's example in
"The Universe in a Nutshell" with two back-to-back accelerating
observers on opposite sides of the Earth maintaining a constant
spacelike separation.
General Relativity is "battle tested" in its classical domain and needs
no improvements there.
Yilmaz's model and Puthoff's PV model both fall under the "Less with
more" category IMHO.
If it ain't broke, don't fix it.
The foundational issues are:
4. Quantum gravity
5. Emergence of "classical curved space-time" from some kind of
"substratum". Different views of the substratum are:
I. spin-networks (quantum computers) -> spin foams in loop quantum gravity
II. "vibrations of strings of pure energy" Brian Green's Elegantly
Tailored Fashion Show on NOVA ;-) See Vatican scene in Felini's
"ROMA". :-)
III. Macro-quantum vacuum coherence (ODLRO) General Relativity and Dark
Energy/Matter emergent "More is different" (PW Anderson)
as in Andrei Sakharov, S. Adler, G. Chapline, G.E. Volovik and my own
simpler dynamical instability QED model for inflation.
.
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