arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2303.04537hep-phastro-ph.CO
收藏

QCD轴子气泡在ALP共振转换存在下的形成

QCD axion bubbles in the presence of ALP resonant conversion

Hai-Jun Li

AI总结:

研究ALP共振转换对QCD轴子气泡形成的影响,发现ALP能量转移可抑制背景温度,进而影响原初黑洞形成。

摘要:

QCD轴子气泡可以在早期宇宙中由于Peccei-Quinn对称性的显式破缺而形成。本文研究了在存在类轴子粒子(ALP)的情况下,考虑其与QCD轴子的共振转换,QCD轴子气泡形成的修正。我们考虑一个一般情景,即在QCD相变之前QCD轴子与ALP混合。在此情景中,ALP的能量密度可以在温度$T_R$处绝热转移到QCD轴子,导致QCD轴子能量密度等于辐射能量密度时的宇宙背景温度$T_B$被抑制。当QCD轴子在QCD相变期间产生时,QCD轴子气泡形成。最后,我们简要讨论了QCD轴子气泡的形成对原初黑洞形成的影响。

英文摘要:

The QCD axion bubbles can form due to an explicit breaking of the Peccei-Quinn symmetry in the early Universe. In this paper, we investigate the modified formation of QCD axion bubble in the presence of axionlike particle (ALP), considering its resonant conversion to QCD axion. We consider a general scenario where the QCD axion mixes with ALP before the QCD phase transition. In this scenario, the energy density of the ALP can be adiabatic transferred to the QCD axion at a temperature $T_R$, resulting in the suppression of the cosmic background temperature $T_B$ at which the energy density of the QCD axion equals that of the radiation. The QCD axion bubbles form when the QCD axions arise during the QCD phase transition. Finally, we briefly discuss the impact of the formation of QCD axion bubbles on 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。

↑