Science > Physics > Intersection Theory of Microscopic and Macroscopic Physics 2
| Topic: |
Science > Physics |
| User: |
"OsherD" |
| Date: |
30 Aug 2005 12:28:36 AM |
| Object: |
Intersection Theory of Microscopic and Macroscopic Physics 2 |
From Osher Doctorow
Take a look at part 1 of this thread - it's very interesting for one
thing in relation to Sir Roger Penrose's twistors but also in relation
to my very recent "Continuous verbal knowledge and continuous universe"
thread.
Quantum Logic and Quantum Gravity (the latter represented by
Superstring/Brane/M Theories and by Loop Quantum Gravity or LQG) were
supposed to respectively find the logical basis of quantum theory and
"unify" quantum theory and general relativity (GR). Forget for a
moment that the Quantum Logic of the early 1970s collapsed in an
attempt to show via Werner Heisenberg's Uncertainty Principle that
there isn't any real logic to quantum theory! (It's been revived and
modified since the 1990s, but without quite shaking off Heisenberg's
ideas.) Quantum Gravity has turned into two fads:
A. The "Discrete Universe" fad.
B. The Algebraic Topology fad (sometimes Algebraic Geometry which it
partly replaced)
Think I'm kidding? Ask a member of the Quantum Gravity schools what
Quantum Theory and General Relativity (GR) have in common, and you'll
either get a "nothing" or an "almost nothing" reply, the latter couched
in "limit under certain conditions" language.
The Quantum Gravity schools, to make a long story short, have given up
on intersections if they ever knew about them. You've heard of
"Anybody for tennis"? Tennis is supposed to be continuous game. How
about "Anybody for discrete tennis?" You won't get any takers. But
you get "suckers" for discrete universe fads every time. The topper to
this story is that Quanum Logic and Quantum Gravity are going down the
same path that 1970s Quantum Logic collapsed into, since the latter
collapsed into discrete islands of unrelated propositions that not only
were unrelated to each other but to continuing experimental research.
Intersection Theory asks what Quantum Theory and General Relativity,
and for that matter any two or more theories, have in common. And Part
1 gives some interesting ideas in that direction.
Osher Doctorow
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