CMB $\mu T$ cross-correlations as a probe of PBH scenarios

  title={CMB \$\mu T\$ cross-correlations as a probe of PBH scenarios},
  author={Ogan Ozsoy and Gianmassimo Tasinato},
We propose a new method for probing inflationary models of primordial black hole (PBH) production, using only CMB physics at relatively large scales. In PBH scenarios, the primordial power spectrum profile for curvature perturbations is characterized by a pronounced dip, followed by a rapid growth towards small scales, leading to a peak responsible for PBH formation. We focus on scales around the dip that are well separated from the peak to analytically compute expressions for the curvature… Expand
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