Results 121 to 130 of about 38,497 (193)
GUT-Scale Primordial Black Holes: Mergers and Gravitational Waves
, 2019 Tight constraints on the abundance of primordial black holes can be deduced across a vast range of masses, with the exception of those light enough to fully evaporate before nucleosynthesis.
Easther, Richard +2 more
core +1 more source
Primordial black holes from first-order cosmological phase transitions
Physics Letters BWe discuss the possibility of forming primordial black holes during a first-order phase transition in the early Universe. As is well known, such a phase transition proceeds through the formation of true-vacuum bubbles in a Universe that is still in a ...
Michael J. Baker +3 more
doaj +1 more source
Galaxy Formation from the Primordial Black Holes
EPJ Web of Conferences, 2017 Supermassive black hole (SMBH) of size MBH = 106-10M⊙ is common in the Universe and it defines the center of the galaxy. A galaxy and the SMBH are generally thought to have co-evolved.
Morikawa Masahiro
doaj +1 more source
Primordial Black Holes from Inflation and non-Gaussianity
, 2018 Primordial black holes may owe their origin to the small-scale enhancement of the comoving curvature perturbation generated during inflation. Their mass fraction at formation is markedly sensitive to possible non-Gaussianities in such large, but rare ...
Franciolini, G. +3 more
core +1 more source
Primordial Black Hole Clusters, Phenomenology & Implications
Physics of the Dark Universe14 pages, 9 figures, 2 ...
José Francisco Nuño Siles +1 more
openaire +3 more sources
Primordial Black Holes from Primordial Voids
7+3 pages, 4 ...
Joana, Cristian, Yuwen, Zi-Yan
openaire +3 more sources
Black holes and Higgs stability
, 2016 We study the effect of primordial black holes on the classical rate of nucleation of AdS regions within the standard electroweak vacuum. We find that the energy barrier for transitions to the new vacuum, which characterizes the exponential suppression of
A. Kobakhidze +6 more
core +1 more source
Non-canonical inflation and primordial black holes production
Physics Letters B, 2019 We study a mechanism for the amplification of the inflationary scalar perturbation when the inflaton field action is non-canonical, i.e. the inflaton kinetic term has a non-standard form.
Alexander Y. Kamenshchik +3 more
doaj +1 more source
Primordial Black Hole Baryogenesis
, 2007 19 pages, 5 ...
Baumann, Daniel +2 more
openaire +2 more sources
On stochastic effects and primordial black-hole formation
European Physical Journal C: Particles and Fields, 2019 The effect of large quantum fluctuations on primordial black-hole formation for inflationary models with a quasi-inflection point is investigated. By using techniques of stochastic inflation in combination with replica field theory and the Feynman–Jensen
Florian Kühnel, Katherine Freese
doaj +1 more source