Formation of primordial black holes from non-Gaussian perturbations produced in a waterfall transition
نویسندگان
چکیده
منابع مشابه
Non-linear metric perturbations and production of primordial black holes
We consider the simple inflationary model with peculiarity in the form of ”plateau” in the inflaton potential. We use the formalism of coarse-grained field in order to describe the production of metric perturbations h of an arbitrary amplitude, and obtain non-Gaussian probability function for such metric perturbations. We associate the spatial regions having large perturbations h ∼ 1 with the r...
متن کاملPrimordial Black Holes from Non–equilibrium Second Order Phase Transition
The collapse of sufficiently large closed domain wall produced during second order phase transition in the vacuum state of a scalar field can lead to the formation of black hole. The origin of domain walls with appropriate size and energy density could be a result of evolution of an effectively massless scalar field at the inflational epoch. We demonstrate that in this case the situation is val...
متن کاملComments on non-Gaussian density perturbations and the production of primordial black holes
We review the basic arguments for the likelihood of non-Gaussian density perturbations in inflation models with primordial black hole (PBH) production. We discuss our derived distributions of field fluctuations and their implications, specifically commenting on the finetuning problem. We also discuss how the derived distributions may be affected when linked to metric perturbations. While linkin...
متن کاملAntimatter from Primordial Black Holes
Primordial black holes (PBHs) could have formed in the early universe from the collapse of overdense regions through significant density fluctuations. Their detection nowadays is a great challenge as it could allow both to check the Hawking evaporation mechanism and to probe the early universe on very small scales that remain totally out of the range investigated by CMB or LSS measurements. The...
متن کاملNeutrinos from primordial black holes.
The emission of particles from black holes created in the early Universe has detectable astrophysical consequences. The most stringent bound on their abundance has been obtained from the absence of a detectable diffuse flux of 100 MeV photons. Further scrutiny of these bounds is of interest as they, for instance, rule out primordial black holes as a dark matter candidate. We here point out that...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review D
سال: 2012
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.85.103504