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arXiv 0804.3433hep-ph
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在弱磁场存在下有限温度下的最小标准模型自能:朝向完全对称性恢复研究

Minimal Standard Model self-energies at finite temperature in the presence of weak magnetic fields: towards a full symmetry restoration study

Maria E. Tejeda-Yeomans, Jorge Navarro, Angel Sanchez, Gabriella Piccinelli, Alejandro Ayala

摘要:

对宇宙高温原始等离子体的研究在解决宇宙学中的不同问题时起着重要作用,例如物质-反物质不对称的起源。在最小标准模型(MSM)中,无论是CP破坏的数量还是相变的强度都不足以在电弱相变(EWPT)过程中产生和保持重子数,而这是形成重子不对称性所需的三个因素中的两个。在这次演讲中,我们提出了第一部分的分析,在一个场景中,它是可行的,以改善上述情况:我们的工作与自由度的MSM对称性破缺阶段,并分析在弱磁场的存在下的EWPT的发展。更具体地说,我们计算的粒子自能,包括弱磁场的影响,所需的MSM有效电位高达环形图。

英文摘要:

The study of the universe's primordial plasma at high temperature plays an important role when tackling different questions in cosmology, such as the origin of the matter-antimatter asymmetry. In the Minimal Standard Model (MSM) neither the amount of CP violation nor the strength of the phase transition are enough to produce and preserve baryon number during the Electroweak Phase Transition (EWPT), which are two of the three ingredients needed to develop baryon asymmetry. In this talk we present the first part of the analysis done within a scenario where it is viable to have improvements to the aforementioned situation: we work with the degrees of freedom in the broken symmetry phase of the MSM and analyze the development of the EWPT in the presence of a weak magnetic field. More specifically, we calculate the particle self-energies that include the effects of the weak magnetic field, needed for the MSM effective potential up to ring diagrams.

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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