相变后的磁场
Magnetic Fields in the Aftermath of Phase Transitions
摘要：
COSLAB的工作集中在相变过程中拓扑缺陷的形成。然而，宇宙学相变还有另一个潜在的有趣特征，也值得在实验室中进行研究。这是在相变期间产生的磁场。特别是，宇宙相变也会导致物质优先于反物质的产生（"重生“），预计会产生螺旋（左手）磁场。在实验室中研究类似的过程可以对螺旋磁场的产生重要的见解，而在宇宙中观察这种场对于粒子物理学和宇宙学都是非常宝贵的。
英文摘要：
The COSLAB effort has focussed on the formation of topological defects during phase transitions. Yet there is another potentially interesting signature of cosmological phase transitions, which also deserves study in the lab. This is the generation of magnetic fields during phase transitions. In particular, cosmological phase transitions that also lead to preferential production of matter over antimatter (``baryogenesis''), are expected to produce helical (left-handed) magnetic fields. The study of analogous processes in the lab can yield important insight into the production of helical magnetic fields, and the observation of such fields in the universe can be invaluable for both particle physics and cosmology.
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