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Neutrino emission and initial evolution of axionic quark nuggets
Physical Review D ( IF 4.6 ) Pub Date : 2021-10-19 , DOI: 10.1103/physrevd.104.083530 Osvaldo P. Santillán 1 , Alejandro Morano 2
Physical Review D ( IF 4.6 ) Pub Date : 2021-10-19 , DOI: 10.1103/physrevd.104.083530 Osvaldo P. Santillán 1 , Alejandro Morano 2
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The axion quark nuggets introduced in the literature are a candidate for cold dark matter which, in addition, may be relevant in baryogenesis scenarios. The present work studies the evolution of these objects till they enter in the color superconducting phase. This evolution was already considered in [S. Ge, X. Liang, and A. Zhitnitsky, Phys. Rev. D 97, 043008 (2018).], where it is concluded that a large chemical potential is induced on the bulk of the object. That work takes the baryon number accumulated at the domain wall surrounding the object as predominant, and suggests that internal and external fluxes are compensated in such a way that they not modify considerably the dynamics of the object if they are neglected. In the present work the possibility that the bulk contribution to the baryon number may be relevant at initial stages, and that the object may emit a large amount of neutrinos due to quark-antiquark annihilations is taken into account. This results into a more violent contraction of the object and perhaps a more effective cooling. The outcome is that the formed objects may have an smaller size. Even taking into account these corrections, it is concluded that the cosmological applications of these objects are not spoiled. These applications are discussed along the text.
中文翻译：
中微子发射和轴子夸克块的初始演化
文献中介绍的轴子夸克块是冷暗物质的候选者，此外，这可能与重子发生场景有关。目前的工作研究这些物体的演变，直到它们进入彩色超导阶段。这种演变已经在[S. Ge、X. Liang 和 A. Zhitnitsky，物理学。Rev. D 97 , 043008 (2018).]，得出的结论是，大化学势在物体的主体上诱导。这项工作以在物体周围的畴壁上积累的重子数为主导，并建议内部和外部通量以这样一种方式得到补偿，即如果它们被忽略，它们不会显着改变物体的动力学。在目前的工作中，在初始阶段对重子数的大量贡献可能是相关的，并且由于夸克 - 反夸克湮灭，该物体可能会发射大量中微子的可能性被考虑在内。这导致物体更剧烈的收缩，并且可能更有效地冷却。结果是形成的物体可能具有更小的尺寸。即使考虑到这些修正，也可以得出结论，这些物体的宇宙学应用并没有受到破坏。
更新日期：2021-10-20
中文翻译：
中微子发射和轴子夸克块的初始演化
文献中介绍的轴子夸克块是冷暗物质的候选者，此外，这可能与重子发生场景有关。目前的工作研究这些物体的演变，直到它们进入彩色超导阶段。这种演变已经在[S. Ge、X. Liang 和 A. Zhitnitsky，物理学。Rev. D 97 , 043008 (2018).]，得出的结论是，大化学势在物体的主体上诱导。这项工作以在物体周围的畴壁上积累的重子数为主导，并建议内部和外部通量以这样一种方式得到补偿，即如果它们被忽略，它们不会显着改变物体的动力学。在目前的工作中，在初始阶段对重子数的大量贡献可能是相关的，并且由于夸克 - 反夸克湮灭，该物体可能会发射大量中微子的可能性被考虑在内。这导致物体更剧烈的收缩，并且可能更有效地冷却。结果是形成的物体可能具有更小的尺寸。即使考虑到这些修正，也可以得出结论，这些物体的宇宙学应用并没有受到破坏。
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