论文标题
早期宇宙中手性发电机的粘性阻尼
Viscous damping of chiral dynamos in the early universe
论文作者
论文摘要
已经提出，早期宇宙中右手和左手瘦的叶子之间的手性发电机转化为螺旋磁场，已被认为是一种可能的宇宙学磁化情况。我们表明，这种机制受到发电机激发的原始血浆运动的粘性阻尼的强烈影响。这种效果修改了手性发电机场的预期强度和相关长度的预期范围，该效果可以在大规模结构的空隙中生存到现在。我们显示了可能在空隙中生存的手性发电机场的参数范围仍然与伽马射线观测值的现有下限在播型磁场上的现有下限，但前提是在温度右左LEPTON不对称性在温度t〜80 tev处的右下限非常高，接近最大值的值。
Chiral dynamo converting asymmetry between right and left-handed leptons in the early universe into helical magnetic field has been proposed as a possible cosmological magnetogenesis scenario. We show that this mechanism is strongly affected by viscous damping of primordial plasma motions excited by the dynamo. This effect modifies the expected range of strength and correlation length of the chiral dynamo field which could have survived till present epoch in the voids of the Large Scale Structure. We show the range of parameters of chiral dynamo field that may have survived in the voids is still consistent with existing lower bounds on intergalactic magnetic field from gamma-ray observations, but only if the right-left lepton asymmetry at the temperature T~80 TeV is very high, close to the maximal possible value.
