Holography, Diffeomorphisms, and Scaling Violations in the CMB
arXiv:hep-th/0402050 · doi:10.1088/1126-6708/2004/07/062
Abstract
We analyze diffeomorphism invariance in inflationary spacetimes regulated by a boundary at late time. We present the action for quadratic fluctuations in the presence of a boundary, and verify that it is gauge invariant precisely when the correct local counterterms are included. The scaling behavior of bulk correlation functions at the boundary is determined by Callan-Symanzik equations which predict scaling violations in agreement with the standard inflationary predictions for spectral indices of the CMB.
35+1 pages; added reference in the Introduction, corrected typos