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arXiv 2011.05999hep-thastro-ph.COgr-qc
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强子扩展的双场Starobinsky暴胀中的原初黑洞暗物质

Primordial black hole dark matter in dilaton-extended two-field Starobinsky inflation

Anirudh Gundhi, Sergei V. Ketov, Christian F. Steinwachs

摘要:

我们研究了Starobinsky的二次膨胀$f(R)$模型的双场扩展中原初黑洞的产生及其对目前观测到的暗物质的贡献。该模型具有多场放大机制,导致在负责生产原始黑洞的小波长处的暴胀功率谱中产生尖锐的峰值。这种机制与单场模型有很大不同,需要在暴胀动力学的中间阶段进行随机处理。我们发现,该模型导致了一个成功的阶段,有效的单场Starobinsky膨胀的波长探测的宇宙微波背景辐射和解释所观察到的冷暗物质内容在宇宙中形成的原始黑洞。

英文摘要:

We investigate the production of primordial black holes and their contribution to the presently observed dark matter in a dilaton two-field extension of Starobinsky's quadratic $f(R)$ model of inflation. The model features a multi-field amplification mechanism which leads to the generation of a sharp peak in the inflationary power spectrum at small wavelengths responsible for the production of primordial black holes. This mechanism is significantly different from single-field models and requires a stochastic treatment during an intermediate phase of the inflationary dynamics. We find that the model leads to a successful phase of effective single-field Starobinsky inflation for wavelengths probed by the cosmic microwave background radiation and explains the observed cold dark matter content in the Universe by the formation 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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