Window function dependence of the novel mass function of primordial black holes

Abstract

We investigate the ambiguity of the novel mass function of primordial black holes, which has succeeded in identifying the black hole mass in a given configuration of fluctuations, due to the choice of window function of smoothed density fluctuations. We find that while the window function dependence of the exponential factor in the novel mass function is the same as the one in the conventional mass function around the top-hat scale, the dependences are different on other scales, which leads to the narrower mass function in the novel formulation for some window functions.

arXiv comment17 pages, 3 figures

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