The role of temperature dependent string-inspired CPT violating backgrounds in leptogenesis and the chiral magnetic effect.
The role of temperature dependent string-inspired CPT violating backgrounds in leptogenesis and the chiral magnetic effect.
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温度依赖性弦激发的 CPT 违反背景在轻子发生和手性磁效应中的作用。
DOI：
10.1140/epjc/s10052-019-6564-3
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
Bossingham T
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文献类型：
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作者：
Bossingham T
在温度依赖的CPT破坏(CPTV)轴向类时背景(由弦理论的Kalb-Ramond张量场诱导)中，我们通过求解Boltzmann方程来讨论瘦子发生.目前的工作非平凡地修改了作者以前的唯象方法的框架，其中CPTV轴背景被认为是一个常数(没有微观上的理由).然而，恒定背景近似显示了瘦子发生的主要现象学特征。将我们的分析与轴向电流凝聚体的相关手征磁效应进行比较，我们得出结论：Kalb-Ramond场不起到该效应所需的手性化学势的作用。
In atemperature dependentCPT-Violating (CPTV) axial time-like background (induced by the Kalb-Ramond tensor field of string theory) we discuss leptogenesis by solving the Boltzmann equation.The current work non-trivially modifies the framework of a previous phenomenological approach by the authors where the CPTVaxialbackground was considered to be a constant (with no microscopic justification). The constant background approximation though is shown to capture the main phenomenological features of leptogenesis. On comparing our analysis to the relatedchiralmagnetic effect for axial current condensates, we conclude that the Kalb-Ramond field doesnotplay the role of thechiralchemical potential needed for that effect.