[1001.4000] Absence of significant cross-correlation betwee
Posted: February 24 2011
The authors claim that the cross-correlation between the CMB and large-scale structure is not statistically significant. Such a detection is usually interpreted as being due to the ISW effect, which is a prediction of dark energy models. (More generally, any cosmological models other than matter-dominated spatially flat FRW predict an ISW effect, though the quantitative details of course vary.)
The authors consider WMAP5 and SDSS DR7 data. They argue that the intrinsic field-to-field fluctuations are larger than the signal and that thus there is o significant detection. I don't quite follow the analysis, and would be grateful if more knowleadgle people would share their views.
The authors consider WMAP5 and SDSS DR7 data. They argue that the intrinsic field-to-field fluctuations are larger than the signal and that thus there is o significant detection. I don't quite follow the analysis, and would be grateful if more knowleadgle people would share their views.