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arXiv 2105.07481astro-ph.COhep-ph
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来自一阶宇宙学相变的原初黑洞

Primordial Black Holes from First-Order Cosmological Phase Transitions

Michael J. Baker, Moritz Breitbach, Joachim Kopp, Lukas Mittnacht

备注：
7 pages, 3 figures; v2: modified BH formation criteria; focus is now on a slightly different region of parameter space, with larger bubbles; references added; conclusions unchanged; v3: improved discussion of the phase transition parameters required for this mechanism; matches published version
发表信息：
Phys. Lett. B 868 (2025) 139625
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AI总结：

本文提出在一阶宇宙学相变中，因粒子质量增大导致气泡壁前粒子传输受抑并积累过密度，从而形成原初黑洞，并通过玻尔兹曼方程定量给出了产生可观丰度所需的条件。

摘要：

我们讨论了在早期宇宙的一阶相变过程中形成原初黑洞的可能性。众所周知，这种相变通过在仍处于假真空的宇宙中形成真空气泡来进行。当存在一种粒子种类，其质量在相变期间显著增加时，相应粒子穿过前进气泡壁的传输会受到抑制。因此，在气泡壁前方可以积累起过密度，并变得足够大以触发原初黑洞形成。我们通过求解玻尔兹曼方程定量追踪这一过程，并描绘了我们的机制产生可观原初黑洞丰度所需的相变性质。

英文摘要：

We 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 false vacuum. When there is a particle species whose mass increases significantly during the phase transition, transmission of the corresponding particles through the advancing bubble walls is suppressed. Consequently, an overdensity can build up in front of the walls and become sufficiently large to trigger primordial black hole formation. We track this process quantitatively by solving a Boltzmann equation, and we delineate the phase transition properties required for our mechanism to yield an appreciable abundance of primordial black holes.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

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