Neutrino Cooling of Primordial Hot Regions

The effect of neutrino cooling of possible primary regions filled by hot matter is discussed. Such regions could be obtained from the primordial density inhomogeneities and survive up to the modern epoch. The inhomogeneities could be caused by a symmetry breaking during the inflationary stage. We sh...

Full description

Saved in:
Bibliographic Details
Published in:Symmetry (Basel) 2020-09, Vol.12 (9), p.1442
Main Authors: Belotsky, Konstantin, El Kasmi, Mohamed, Rubin, Sergey
Format: Article
Language:English
Subjects:
Broken symmetry
Cooling
Cooling effects
Energy
Evolution
Inhomogeneity
neutrino cooling
Neutrinos
Nuclear reactions
primordial black holes
primordial hot regions
Universe
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The effect of neutrino cooling of possible primary regions filled by hot matter is discussed. Such regions could be obtained from the primordial density inhomogeneities and survive up to the modern epoch. The inhomogeneities could be caused by a symmetry breaking during the inflationary stage. We show that the final temperature of such region should be ∼10 keV provided that the initial temperature is within the interval 10 keV ÷ 100 MeV. The cooling is realized due to the weak nuclear reactions containing n−p transition. The lower limit 10keV is accounted for by suppression of the reactions rates because of the threshold effect and particle concentration decrease.
ISSN:2073-8994
2073-8994
DOI:10.3390/sym12091442