Trans-Planckian Censorship and the Swampland
Trans-Planckian Censorship and the Swampland
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DOI：
10.1007/jhep09(2020)123
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发表时间：
2020-09-18
影响因子：
5.4
通讯作者：
Vafa, Cumrun
中科院分区：
文献类型：
--
作者：
Bedroya, Alek;Vafa, Cumrun
在本文中，我们提出了一个新的沼泽地条件，跨普朗克审查猜想（TCC），基于这样的想法，在一个一致的量子引力理论中，次普朗克量子涨落应该保持量子，永远不会变得比哈勃视界更大，并冻结在膨胀的宇宙中。应用到标量场的情况下，它导致的条件是类似的精制dS沼泽猜想。对于大的场范围，TCC比dS沼泽地猜想强，但对于小的场范围，TCC比dS沼泽地猜想弱。特别是对于场空间的渐近区域，TCC导致一个有界垂直杆V 'vertical bar >= 2/root（d-1）（d-2）V，这与弦理论中所有已知的情况是一致的。与dS Swampland猜想一样，TCC禁止长寿命的亚稳定dS空间，但它确实允许足够短寿命的空间。
In this paper, we propose a new Swampland condition, the Trans-Planckian Censorship Conjecture (TCC), based on the idea that in a consistent quantum theory of gravity sub-Planckian quantum fluctuations should remain quantum and never become larger than the Hubble horizon and freeze in an expanding universe. Applied to the case of scalar fields, it leads to conditions that are similar to the refined dS Swampland conjecture. For large field ranges, TCC is stronger than the dS Swampland conjecture but it is weaker for small field ranges. In particular for asymptotic regions of field space, TCC leads to a bound vertical bar V'vertical bar >= 2/root(d-1)(d-2) V, which is consistent with all known cases in string theory. Like the dS Swampland conjecture, the TCC forbids long-lived meta-stable dS spaces, but it does allow sufficiently short-lived ones.