Two-Field Model of Gravitational-Scalar Instability and Formation of Supermassive Black Holes in the Early Universe

IF 1.2 4区 物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS Gravitation and Cosmology Pub Date : 2023-06-10 DOI:10.1134/S0202289323020056
Yu. G. Ignat’ev
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引用次数: 4

Abstract

Based on the previously formulated mathematical model of a statistical system with scalar interaction of fermions and the theory of gravitational-scalar instability of a cosmological model based on a two-component statistical system of scalarly charged degenerate fermions, a numerical model of the cosmological evolution of gravitational-scalar perturbations in the presence of classical and phantom scalar fields is constructed and studied. The gravitational-scalar instability at early stages of expansion arises in the model under study at sufficiently large scalar charges, and the instability develops near unstable points of the vacuum doublet. Short-wave perturbations of the free phantom field turn out to be stable at stable singular points of the vacuum doublet. It is shown that for sufficiently large scalar charges, mass perturbations can grow to the values of masses black hole seeds (BHS).

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早期宇宙中引力标量不稳定性和超大质量黑洞形成的双场模型
基于先前建立的费米子标量相互作用统计系统的数学模型和基于标量带电简并费米子双组分统计系统的宇宙学模型的引力标量不稳定性理论,构建并研究了经典场和虚标量场存在下引力标量扰动的宇宙学演化的数值模型。在足够大的标量电荷条件下,所研究的模型在膨胀初期出现了引力标量不稳定性,这种不稳定性在真空重态的不稳定点附近发展。自由虚场的短波扰动在真空双偶态的稳定奇点处是稳定的。结果表明,对于足够大的标量电荷,质量扰动可以增长到质量黑洞种子(BHS)的值。
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来源期刊
Gravitation and Cosmology
Gravitation and Cosmology ASTRONOMY & ASTROPHYSICS-
CiteScore
1.70
自引率
22.20%
发文量
31
审稿时长
>12 weeks
期刊介绍: Gravitation and Cosmology is a peer-reviewed periodical, dealing with the full range of topics of gravitational physics and relativistic cosmology and published under the auspices of the Russian Gravitation Society and Peoples’ Friendship University of Russia. The journal publishes research papers, review articles and brief communications on the following fields: theoretical (classical and quantum) gravitation; relativistic astrophysics and cosmology, exact solutions and modern mathematical methods in gravitation and cosmology, including Lie groups, geometry and topology; unification theories including gravitation; fundamental physical constants and their possible variations; fundamental gravity experiments on Earth and in space; related topics. It also publishes selected old papers which have not lost their topicality but were previously published only in Russian and were not available to the worldwide research community
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