Primordial black holes

• Published in: Research in astronomy and astrophysics Vol. 10; no. 6; pp. 495 - 528
• Main Author: Khlopov, Maxim Yu
• Format: Journal Article
• Language: English
• Published: IOP Publishing 01.06.2010; Centre for Cosmoparticle Physics "Cosmion" Kashirskoe Sh., 31, Moscow 115409, Russia; National Research Nuclear University "Moscow Engineering Physics Institute," Kashirskoe Sh.,31, Moscow; APC laboratory 10, rue Alice Domon et Léonie Duquet 75205 Paris Cedex 13,France
• Subjects: Astrophysics; Cosmology and Extra-Galactic Astrophysics; General Relativity and Quantum Cosmology; High Energy Physics - Phenomenology; Physics; Sciences of the Universe; 中等质量; 宇宙结构; 密度扰动; 早期宇宙; 星系形成; 粒子物理学; 通货膨胀; elementary particles; early universe; black hole physics; cosmology:theory; dark matter; Particle physics and field theory; Gravitation and cosmology; Astrophysics and astroparticles
• ISSN: 1674-4527; 2397-6209
• DOI: 10.1088/1674-4527/10/6/001

Primordial black holes （PBHs） are a profound signature of primordial cosmological structures and provide a theoretical tool to study nontrivial physics of the early Universe. The mechanisms of PBH formation are discussed and observational constraints on the PBH spectrum, or effects of PBH evaporation, are shown to restrict a wide range of particle physics models, predicting an enhancement of the ultraviolet part of the spectrum of density perturbations, early dust-like stages, first order phase transitions and stages of superheavy metastable particle dominance in the early Universe. The mechanism of closed wall contraction can lead, in the inflationary Universe, to a new approach to galaxy formation, involving primordial clouds of massive BHs created around the intermediate mass or supermassive BH and playing the role of galactic seeds.