On Apr 12, 5:40 pm, Yousuf Khan wrote:

I was watching a program which were comparing various Big Bang theories
against each other. In it, they said one way to falsify Inflation vs.
Cyclic Universe theories is that a Cyclic Universe will *not* produce
gravity waves. Does anybody know why this would be the case? One would
think that whatever mechanism lead to the BB, would always cause a lot
of gravity ripples.

I found some info on it, but it doesn't really explain what leads to
this conclusion:

Gravity waves has nothing to do cosmology but the very mathematics of
GR that allows a wave equation to be derived similar to the wave
equations derived by Maxwell that explained light as electromagnetic
radiation. shrug

The one possible test that they point to that could distinguish
the inflation and cyclic scenarios is the expected more sensitive
measurement in coming years of a possible B-mode polarization
signal due to gravity waves in the CMB. They claim that inflation
predicts a significant amount of B-mode polarization, whereas the
cyclic model doesn’t.

Cosmology cannot be tested but stated. shrug

Endless Universe | Not Even Wrong
http://www.math.columbia.edu/~woit/wordpress/?p=563

shrug