It's an interesting alternative to the other Cyclic Universe theory:
http://www.edge.org/3rd_culture/turok07/turok07_index.htmlhttp://www.edge.org/3rd_culture/steinhardt02/steinhardt02_p2.htmlMartin Bojowald's theory hinges on the idea of loop quantum gravity, about which here's the conclusion of Carlo Rovelli, Department of Physics and Astronomy, University of Pittsburgh:
"In my view, loop quantum gravity is the best we can do so far in trying to understand quantum spacetime, from a nonperturbative, background-independent point of view. Theoretically, we have reasons to suspect that this approach could represent a consistent quantum theory with the correct classical limit, but there are also some worrying contrary indications. The theory yields a definite physical picture of quantum spacetime and definite quantitative predictions, but a systematic way of extracting physical information is still lacking.
Experimentally, there is no support to the theory, neither direct nor indirect. The spectra of area and volume computed in the theory could or could not be physically correct. I hope I live long enough to know!"
http://relativity.livingreviews.org/Articles/lrr-1998-1/download/lrr-1998-1Color.pdfWhat's needed is for Bojowald's theory to lead to predictions that match cosmological observations. That would support its basis, i.e., the theory of loop quantum gravity.