2014/12/11 by Mehrdad Mirbabayi, Mirbabayi, Mehrdad, Marko Simonović +3 · 1 citation
Physics and Astronomy · #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #High Energy Physics - Theory (hep-th) #astro-ph.CO #hep-th
paper · pdf · doi:10.48550/arxiv.1412.3796
2 pages
arxiv created 2015/04/20 · arxiv updated 2015/04/29
In the non-relativistic regime, pertinent to the large scale structure of the Universe, the leading effect of a long-wavelength perturbation δ(λL) on short distance physics is a uniform acceleration ∝ λL δ(λL). Typically, this has no effect on statistical averages at equal time since a uniform acceleration results in a uniform translation -- a reasoning that has been formalized as a "consistency condition" on the cosmological correlation functions. This naive expectation fails in the presence of the baryon acoustic feature provided λL < ℓ\rm BAO. We derive the squeezed limit of correlation functions in this regime.