arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0905.3365hep-phastro-ph.CO
收藏

宇宙的重子不对称性与星系磁场有关吗?

Is the baryon asymmetry of the Universe related to galactic magnetic fields?

V. B. Semikoz, D. D. Sokoloff, J. W. F. Valle

摘要:

在与基本粒子质量的产生相关的电弱相变(EWPT)之前产生的一个微小的超磁场可以使早期宇宙的热等离子体在z > 10 ^[15]的巨大红移处发生红移。EWPT的右手电子流特征的反常破坏将轻子不对称性转化为重子不对称性。在合理的近似下,通过对观测到的宇宙重子不对称性的“瘦生”起源的要求所推断出的磁场强度,与从当前天文观测中估计的大尺度宇宙学磁场强度相匹配。

英文摘要:

A tiny hypermagnetic field generated before the electroweak phase transition (EWPT) associated to the generation of elementary particle masses can polarize the early Universe hot plasma at huge redshifts z > 10^15. The anomalous violation of the right-handed electron current characteristic of the EWPT converts the lepton asymmetry into a baryon asymmetry. Under reasonable approximations, the magnetic field strength inferred by requiring such "leptogenic" origin for the observed baryon asymmetry of the Universe matches the large-scale cosmological magnetic field strengths estimated from current astronomical observations.

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。

↑