🚀 go-pugleaf

On Feb 19, 6:49 pm, Tom Roberts <tjroberts...@sbcglobal.net> wrote:
> Pentcho Valev wrote:
> > EINSTEINIANS BOTHERED BY EINSTEIN'S 1954 CONFESSION
>
> I rarely respond to idiots and smarmy trolls, but chose to make an
> exception in this case because there is a lesson involved that others
> might find either useful or interesting.
>
> > Albert Einstein 1954: "I consider it entirely possible that physics
> > cannot be based upon the field concept, that is on continuous
> > structures."
>
> Einstein created several interesting and elegant theories, SR and GR,
> which have served as the foundation of other interesting and elegant
> theories, QED, QFT, the standard model, etc. All are based on fields
> (continuous structures), including the quantum theories.
>
> People who understand what science actually is, know it is a QUEST, a
> process, a journey, and not merely a static body of knowledge. Such
> people are not "bothered" by Einstein's statement at all. He is merely
> saying that his theories ("castle in the air") are just steps along the
> path that is physics, and are not the final endpoint -- obvious to
> anyone who truly understand science.
>
> Indeed, modern approaches to quantum gravity are not based on fields or
> continuous structures. Unlike Valev's narrow-minded opinions, real
> physicists are not "bothered" by Einstein's remark, many have been
> INSPIRED by it.

The problem, Honest Roberts, is that your quantum gravity masters call
special relativity "the root of evil" and want to "drop a postulate,
perhaps the constancy of the speed of light":

Joao Magueijo, PLUS VITE QUE LA LUMIERE, Dunod, 2003, pp. 298-299:
"La racine du mal etait clairement la relativite restreinte. Tous ces
paradoxes resultaient d'effets bien connus comme la contraction des
longueurs, la dilatation du temps, ou E=mc^2, tous des predictions
directes de la relativite restreinte. (...) La consequence en etait
inevitable: pour edifier une theorie coherente de la gravite
quantique, quelle qu'elle soit, nous [Joao Magueijo et Lee Smolin]
devions commencer par abandonner la relativite restreinte. (...) Mais,
comme nous l'avons vu, celle-ci repose sur deux principes
independants. Le premier est la relativite du mouvement, le second la
constance de la vitesse de la lumiere. Une des solutions possibles a
notre probleme pouvait etre d'abandonner la relativite du mouvement.
(...) C'est une possibilite bien sur, mais nous avons choisi
l'alternative evidente: preserver la relativite du mouvement, mais
admettre qu'a de tres hautes energies, la vitesse de la lumiere ne
soit plus constante."

http://query.nytimes.com/gst/fullpage.html?res=9E03E7D8143FF932A05751C1A9649C8B63&sec=&spon=&pagewanted=all
"As propounded by Einstein as an audaciously confident young patent
clerk in 1905, relativity declares that the laws of physics, and in
particular the speed of light -- 186,000 miles per second -- are the
same no matter where you are or how fast you are moving. Generations
of students and philosophers have struggled with the paradoxical
consequences of Einstein's deceptively simple notion, which underlies
all of modern physics and technology, wrestling with clocks that speed
up and slow down, yardsticks that contract and expand and bad jokes
using the word ''relative.''......''Perhaps relativity is too
restrictive for what we need in quantum gravity,'' Dr. Magueijo said.
''We need to drop a postulate, perhaps the constancy of the speed of
light.''

http://www.fqxi.org/data/articles/Searching_for_the_Golden_Spike.pdf
"Loop quantum gravity also makes the heretical prediction that the
speed of light depends on its frequency. That prediction violates
special relativity, Einstein's rule that light in a vacuum travels at
a constant speed for all observers..."

http://www.edge.org/3rd_culture/smolin03/smolin03_print.html
Lee Smolin: "Now, here is the really interesting part: Some of the
effects predicted by the theory appear to be in conflict with one of
the principles of Einstein's special theory of relativity, the theory
that says that the speed of light is a universal constant. It's the
same for all photons, and it is independent of the motion of the
sender or observer. How is this possible, if that theory is itself
based on the principles of relativity? The principle of the constancy
of the speed of light is part of special relativity, but we quantized
Einstein's general theory of relativity.....But there is another
possibility. This is that the principle of relativity is preserved,
but Einstein's special theory of relativity requires modification so
as to allow photons to have a speed that depends on energy. The most
shocking thing I have learned in the last year is that this is a real
possibility. A photon can have an energy-dependent speed without
violating the principle of relativity! This was understood a few years
ago by Amelino Camelia. I got involved in this issue through work I
did with Joao Magueijo, a very talented young cosmologist at Imperial
College, London. During the two years I spent working there, Joao kept
coming to me and bugging me with this problem.....These ideas all
seemed crazy to me, and for a long time I didn't get it. I was sure it
was wrong! But Joao kept bugging me and slowly I realized that they
had a point. We have since written several papers together showing how
Einstein's postulates may be modified to give a new version of special
relativity in which the speed of light can depend on energy."

Pentcho Valev
pvalev@yahoo.com