Re: Space Travel

On 26 Feb, 00:19, James Colvier <jamescolv...@xxxxxxxxx> wrote:
I was wondering if anybody knew anything about the possibility of
traveling faster than the speed of light. I studied E=mc2, but if I
understand it correctly, that doesn't actually state that it isn't
possible. If it were possible, what would it require, and how would it
operate?

-James Colvier

Special Relativity has got the paradox of time travel. This is not E-
Mc^2 it is involved with the Lorenz transformation equations.

Some FAQs on FTL

http://groups.google.co.uk/group/sci.physics.relativity/browse_frm/thread/18e6a12c655743ed/19ac584ec00a337d?hl=en&lnk=st&q=#19ac584ec00a337d

http://groups.google.co.uk/group/sci.physics/browse_frm/thread/4395dba4fd8c9480/e3ed38f811b586a2?hl=en&lnk=st&q=#e3ed38f811b586a2

Introduces Feynmann diagrams to resolve paradoxes.

The next thread is on quantum entaglement. I have shown that FTL with
entanglement is in fact a fallacy.

http://groups.google.co.uk/group/sci.physics.research/browse_frm/thread/89c1593ac7038908/6c1cf06e338c4dd8?hl=en&lnk=st&q=#6c1cf06e338c4dd8

This started off with a proposal to use quantum entanglement to
convey
information FTL. As I pointed out all entanglement experiments can be
transformed using SU2 (Lorentz can be written in this form) hence any
FTL behaviour must be a paradox. A little bit more sophisticated that
rods passing over holes, but a paradox none the less.


There is some interesting discussion as to the grandfather paradox.
You cannot go back and kill your grandfather. Someone in a thread
suggested that you ask your grandmother to guess under pain of death
the factors of a product of two large primes (RSA). This, in effect,
is what a quantum mechanical computer will be doing when it
factorizes
for RSA. Well not exacltly, it will use Aitken's algorithm, and
simply
use the quantum "parallelism" to perform calculations with a low bit
number.


http://arxiv.org/abs/quant-ph/0506027


This is an extremely interesting paper, or I think it is. It allows a
limited time travel, time travel for particles with a quantum
uncertainty. The past is fixed and an uncertainty principle applies
to
the future. Very interesting from the point of view of philosopical
"free will".


It would seem therefore that FTL is completely impossible for bulk
matter, that is to say spaceships. Particles are tremendously
interesting from a theoretical stand point but are of little
consequence here.



This next thread is about the expansion of the Universe and FTL in the
Big Bang

http://groups.google.co.uk/group/sci.astro/browse_frm/thread/e1046a4c84c6015a/6d2470ec13bc5bf6?hl=en&lnk=st&q=#6d2470ec13bc5bf6

This is expansion into empty space and can occur paradox free.

I hope all this helps.


- Ian Parker
.

Relevant Pages

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