We point out that the de Sitter swampland conjecture would be falsified if classical fluxed Type IIA orientifold vacua with a single non‐BPS D7‐brane were indeed part of the string theory landscape. In other words, the dS swampland conjecture implies the cancellation of K‐theory charges on a compact space.

中文翻译：

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关于dS Swampland猜想，非BPS领域和K理论的注释

我们指出，如果带有单个非BPS D7叶片的经典通量IIA型定向抽真空确实是弦理论领域的一部分，那么de Sitter沼泽地猜想将被证伪。换句话说，dS沼泽地猜想意味着在紧凑空间上抵消了K理论电荷。