Constraining F (R) bouncing cosmologies through primordial black holes
Banerjee S, Papanikolaou T, Saridakis EN (2022)
Publication Type: Journal article
Publication year: 2022
Journal
Book Volume: 106
Article Number: 124012
Journal Issue: 12
DOI: 10.1103/PhysRevD.106.124012
Abstract
The phenomenology of primordial black hole (PBH) physics and the associated PBH abundance constraints can be used to probe the physics of the early universe. In this work, we investigate the PBH formation during the standard radiation-dominated era by studying the effect of an early F(R) modified gravity phase with a bouncing behavior which is introduced to avoid the initial spacetime singularity problem. In particular, we calculate the energy density power spectrum at horizon crossing time, and then we extract the PBH abundance in the context of peak theory as a function of the parameter α of our F(R) gravity bouncing model at hand. Interestingly, we find that to avoid gravitational-wave overproduction from an early PBH dominated era before big bang nucleosynthesis, α should lie within the range α≤10-19MPl2. This constraint can be translated to a constraint on the energy scale at the onset of the hot big bang phase, HRD∼α/2, which can be recast as HRD<10-10MPl.
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APA:
Banerjee, S., Papanikolaou, T., & Saridakis, E.N. (2022). Constraining F (R) bouncing cosmologies through primordial black holes. Physical Review D, 106(12). https://dx.doi.org/10.1103/PhysRevD.106.124012
MLA:
Banerjee, Shreya, Theodoros Papanikolaou, and Emmanuel N. Saridakis. "Constraining F (R) bouncing cosmologies through primordial black holes." Physical Review D 106.12 (2022).
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