Neutrino primordial Planckian black holes

Autor(es)

Carneiro, Saulo ^{[1, 2]} ; de Holanda, Pedro C. ^[3] ; Saa, Alberto ^[4]

Afiliação do(s) autor(es)

^[1] Univ Fed Bahia, Inst Fis, BR-40210340 Salvador, BA - Brazil

^[2] Univ Fed Espirito Santo, PPGCosmo, CCE, BR-29075910 Vitoria, ES - Brazil

^[3] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083859 Campinas, SP - Brazil

^[4] Univ Estadual Campinas, Dept Matemat Aplicada, BR-13083859 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Physics Letters B; v. 822, NOV 10 2021.
• Citações Web of Science: 0

Resumo

Extremal rotating black holes can be formed in the Planck energy scattering of Dirac spin parallel neutrinos in the mass state m(2) (assuming m(1) = 0), owing to the repulsive interaction between their magnetic dipoles, induced by vacuum fluctuations. Assuming that some recent results of loop-quantised Schwarzschild black holes would be also applicable for the Kerr case, we show that the resulting black hole has Planck mass and angular momentum h over line , and that its horizon area is in the spectrum of the Loop Quantum Gravity area operator. Moreover, we argue that such black holes could be produced at the reheating, with an abundance that allows their interpretation as forming the presently observed dark matter component, provided that the energy scale at inflation is approximate to 10(17) GeV. This scale can be lower if we attribute a high chemical potential to primordial neutrinos. As extremal black holes have zero surface gravity, there is no limits on their abundance from Hawking evaporation. (C) 2021 The Author(s). Published by Elsevier B.V. (AU)

• Processo FAPESP: 14/19164-6 - Desafios para o século XXI em física e astrofísica de neutrinos
• Beneficiário: Orlando Luis Goulart Peres
• Modalidade de apoio: Auxílio à Pesquisa - Projetos Especiais