标题： 超导性解决了爱丽丝弦的单极子问题 显示英文标题

标题： Superconductivity Solves the Monopole Problem for Alice Strings

摘要： 爱丽丝字符串是将物质转化为反物质的宇宙弦。 尽管它们在许多大统一理论中自然出现，但长期以来人们认为由于单极子问题，它们不可能对宇宙学产生影响。 我们证明这个结论是错误的；通过使用朗格纳克-皮机制，单极子实际上可以被湮灭，而爱丽丝字符串则保持完整。 这开辟了它们最终可能对宇宙学做出贡献的可能性，我们提到一些特别重要的例子。 显示英文摘要

摘要： Alice strings are cosmic strings that turn matter into antimatter. Although they arise naturally in many GUT's, it has long been believed that because of the monopole problem they can have no cosmological effects. We show this conclusion to be false; by using the Langacker-Pi mechanism, monopoles can in fact be annihilated while Alice strings are left intact. This opens up the possibility that they can after all contribute to cosmology, and we mention some particularly important examples.