On May 23, 9:39 pm, Sam Wormley <sworml...@mchsi.com> wrote:
Jimmer wrote:
Supposed a superluminal signal were engineered and causality was put
to the test.
There is no such thing as superluminal "signals".
Quantum entanglement cannot be used for *arbitrary communications*
over arbitrary distances which remains constrained by the speed
of light.
Neither phase velocity nor group velocity can be used for *arbitrary
communications* over arbitrary distances which remains constrained by
the speed of light.
I know. But for sake of theoretical exploration, let's say that in
another parallel brane universe
where there are more degree of freedom and some exotic forces can
produce superluminal
signal with communication capability and granted that universe also
obey the law of
SR and GR with extra superluminal degree of freedom and the past being
malleable.
What would be the kinds of experiments to observe whether the present
can suddenly
change from the past altered.. assuming the timeline won't split and
the altered past
won't have its own future separate from ours.
A Mathematical Theory of Communication by Claude E. Shannon
http://cm.bell-labs.com/cm/ms/what/shannonday/paper.html
http://cm.bell-labs.com/cm/ms/what/shannonday/shannon1948.pdf
Claude E. Shannon
http://scienceworld.wolfram.com/biography/Shannon.html
.
