微调、隔离和沼泽地
Fine Tuning, Sequestering, and the Swampland
摘要：
我们猜想并提出证据表明，任何有效场论耦合到引力在平坦的空间承认最多有有限数量的微调，取决于超对称性和时空维度的数量。特别是，这意味着在引力场的背景下，在给定的有效场论的允许变形之间存在着无穷多个非平凡的相关性。微调的参数，使我们能够获得一些一致的CFTs的引力理论的IR限制。与有限的微调，我们推测，除了有限数量的CFTs，其余的不能始终耦合到重力，属于沼泽地。此外，我们认为，即使物质部门耦合到重力有时可能会部分隔离，有一个不可约的水平之间的混合，这些部门之间的关联和耦合无限多的运营商。
英文摘要：
We conjecture and present evidence that any effective field theory coupled to gravity in flat space admits at most a finite number of fine tunings, depending on the amount of supersymmetry and spacetime dimension. In particular, this means that there are infinitely many non-trivial correlations between the allowed deformations of a given effective field theory in the gravitational context. Fine tuning of parameters allows us to obtain some consistent CFTs in the IR limit of gravitational theories. Related to finiteness of fine tunings, we conjecture that except for a finite number of CFTs, the rest cannot be consistently coupled to gravity and belong to the swampland. Moreover, we argue that even though matter sectors coupled to gravity may sometimes be partially sequestered, there is an irreducible level of mixing between them, correlating and coupling infinitely many operators between these sectors.
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