Казанский (Приволжский) федеральный университет, КФУ
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PRIMORDIAL BLACK HOLES FROM SPATIALLY VARYING COSMOLOGICAL CONSTANT INDUCED BY FIELD FLUCTUATIONS IN EXTRA DIMENSIONS
Форма представленияСтатьи в зарубежных журналах и сборниках
Год публикации2024
Языканглийский
  • Попов Аркадий Александрович, автор
  • Библиографическое описание на языке оригинала Popov, A.A. Primordial Black Holes from Spatially Varying Cosmological Constant Induced by Field Fluctuations in Extra Dimensions / A.A. Popov, S.G. Rubin, A.S. Sakharov // Universe. - 2024. - V.10. - P. 166
    Аннотация The origin and evolution of supermassive black holes (SMBHs) in our universe have sparked controversy. In this study, we explore the hypothesis that some of these black holes may have seeded from the direct collapse of dark energy domains with density significantly higher than the surrounding regions. The mechanism of the origin of such domains relies on the inflationary evolution of a scalar field acting in $D$ dimensions, which is associated with the cosmological constant in our four-dimensional spacetime manifold. Inner space quantum fluctuations of the field during inflation are responsible for the spatial variations of the dark energy density in our space. This finding holds particular significance, especially considering recent evidence from pulsar timing array observations, which supports the existence of a stochastic gravitational wave background consisting of SMBH mergers.
    Ключевые слова primordial black hole, supermassive black hole, cosmological constant, dark energy, extra dimensions, inflation
    Название журнала UNIVERSE
    URL https://www.mdpi.com/2218-1997/10/4/166
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