Today was a low-research day, because [reality]. However, Kate Storey-Fisher (NYU) and I had a great discussion with Josh Ruderman (NYU) about anomalies in the LSS. As my loyal reader knows, we are looking at constructing a statistically valid, safe search for deviations from the cosmological model in the large-scale structure. That search is going to focus towards the overlap (if there is any overlap) between anomalies that are safe to systematic problems with the data (that is, anomalies that can't be mocked by reasonable adjustments to our beliefs about our selection function) and anomalies that live in spaces suggested or predicted by theoretical ideas about non-standard cosmological theories. In particular, we are imagining theories that have the dark sector do interesting things at late times. We didn't make concrete plans in this meeting, except to read down literatures about late decays of the dark matter, dark radiation, and other kinds of dark–dark interactions that could be happening in the current era.
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