2019/08/13 by Robert Brandenberger, Hao Jiao
Physics and Astronomy · #Astronomy #Astrophysics #Black Holes and Theoretical Physics #Black hole (networking) #COSMIC cancer database #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #Galaxy #Physics #Redshift #Supermassive black hole #astro-ph.CO #gr-qc #hep-ph #hep-th
paper · pdf · doi:10.1088/1475-7516/2020/02/002
9 pages, 2 figures
arxiv created 2019/08/13 · openalex publication_date 2020/02/03 · arxiv updated 2020/02/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We consider theories with global monopole or global texture defects and compute the number density of nonlinear seed fluctuations as a function of mass and redshift. Specifically, we focus on the mass range which is expected to be relevant for seeding supermassive black holes. We find that there is an interesting range of symmetry breaking scales for which the density of seeds is larger that what is predicted in the standard cosmological model with Gaussian primordial fluctuations. Hence, global defects may help in light of the mounting tension between the standard cosmological model and observations of supermassive black hole candidates at high redshifts.