Just released yesterday …
About a month after the initial paper, three groups rebut the Gurzadyan/Penrose cyclic universe theory:
No evidence of time before Big Bang, published 10th Dec 2010.
Quote:
All three groups reproduced Gurzadyan's analysis of the WMAP data and all agree that the data do contain low-variance circles. Where they part company with the earlier work is in the significance that they attribute to these circles.
..
"The result obtained by Gurzadyan and Penrose does not in any way provide evidence for Penrose's cyclical model of the Universe over standard inflation," says Zibin.
..
Gurzadyan dismisses the critical analyses as "absolutely trivial", arguing that there is bound to be agreement between the standard cosmological model and the WMAP data "at some confidence level" but that a different model, such as Penrose's, might fit the data "even better" " — a point he makes in a response to the three critical papers also posted on arXiv. However, he is not prepared to state that the circles constitute evidence of Penrose's model. "We have found some signatures that carry properties predicted by the model," he says.
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Interesting to see another model from a distinguished scientist (Penrose), going up against the mainstream one.
Just goes to show that the Scientific process
does allow for consideration of competing theories.
Cheers