重生、磁生和异常相互作用的强度
Baryogenesis, magnetogenesis and the strength of anomalous interactions
摘要：
超磁旋向性的产生是在规范耦合在准德西特阶段平滑演化，然后在辐射阶段通过始终保持微扰而消失的假设下进行研究的。在由反常相互作用的强度和规范耦合的演化速率定义的平面上，如果在暴胀阶段要避免对均匀性的重大偏离，赝标相互作用的实际权重总是相当小的。即使规范功率谱仅在不存在异常贡献的情况下通过对偶性相关，近似对偶对称性也约束了超磁功率谱的后期形式。由于与在相变之前重新进入的模式相关联的超磁回转性必须在稍后释放到费米子中，因此所获得的重子不对称性接近于观测值的参数空间的部分与当前的结果最相关。对于相同的参数范围内的磁功率谱与对称性破缺后重新进入的模式，甚至可能是几个百分之一个nG的典型长度尺度可比的Mpc前的原星系崩溃的顺序。
英文摘要：
The production of the hypermagnetic gyrotropy is investigated under the assumption that the gauge coupling smoothly evolves during a quasi-de Sitter phase and then flattens out in the radiation epoch by always remaining perturbative. In the plane defined by the strength of the anomalous interactions and by the rate of evolution of the gauge coupling the actual weight of the pseudoscalar interactions turns out to be always rather modest if major deviations from the homogeneity are to be avoided during the inflationary phase. Even if the gauge power spectra are related by duality only in the absence of anomalous contributions, an approximate duality symmetry constrains the late-time form of the hypermagnetic power spectra. Since the hypermagnetic gyrotropy associated with the modes reentering prior to the phase transition must be released into fermions later on, the portions of the parameter space where the obtained baryon asymmetry is close to the observed value are the most relevant for the present ends. For the same range of parameters the magnetic power spectra associated with the modes reentering after symmetry breaking may even be of the order of a few hundredths of a nG over typical length scales comparable with the Mpc prior to the collapse of the protogalaxy.
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