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arXiv 2104.08288hep-thastro-ph.COgr-qchep-ph
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格拉维蒂诺和沼泽地

The Gravitino and the Swampland

Niccolò Cribiori, Dieter Lust, Marco Scalisi

摘要:

我们提出了一个新的沼泽地猜想,指出引力子质量消失的极限对应于无限状态塔的无质量极限,并由此导致有效场论的崩溃。我们测试我们的建议在大类的模型来自紧化的弦论的四维,在那里我们确定卡鲁扎-克莱因性质的塔的国家成为轻。我们指出了一个一般的引力子质量和阿贝尔规范耦合模型与扩展的超对称性,这也可以生存在最小的超对称性的例子之间的关系。这使我们能够将我们的猜想与其他公认的沼泽地理论联系起来,例如弱引力猜想或量子引力中不存在全局对称性。我们讨论了我们的猜想(准)德西特背景的唯象影响,并提取引力子质量的哈勃参数的下限。

英文摘要:

We propose a new swampland conjecture stating that the limit of vanishing gravitino mass corresponds to the massless limit of an infinite tower of states and to the consequent breakdown of the effective field theory. We test our proposal in large classes of models coming from compactification of string theory to four dimensions, where we identify the Kaluza-Klein nature of the tower of states becoming light. We point out a general relation between the gravitino mass and abelian gauge coupling in models with extended supersymmetry, which can survive also in examples with minimal supersymmetry. This allows us to connect our conjecture to other well established swampland conjectures, such as the weak gravity conjecture or the absence of global symmetries in quantum gravity. We discuss phenomenological implications of our conjecture in (quasi-)de Sitter backgrounds and extract a lower bound for the gravitino mass in terms of the Hubble parameter.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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