Trans-Planckian Censorship and the Swampland

Abstract

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. TCC leads to conditions that are similar to the refined dS Swampland conjecture. For example, applied to the case of cosmologies driven only by a scalar field, the TCC imposes an upper bound of $2/\sqrt{d-2}$ on the asymptotic value of $|V^{\prime }|/V$. Additionally, it implies that a monotonically decreasing potential across $[{\varphi }_1,{\varphi }_2]$ satisfies $V({\varphi }_2)\le A\cdot \exp (-2({\varphi }_2-{\varphi }_1))/\sqrt{(d-1)(d-2)})$ for some $\mathcal{O}(1)$ constant $A$. Like the dS Swampland conjecture, the TCC forbids long-lived meta-stable dS spaces, but allows sufficiently short-lived ones.

The changes made to the abstract and introduction in the previous version are clarified

References in corpus (7)

• On the Geometry of the String Landscape and the Swampland
• Trans-Planckian Censorship and Inflationary Cosmology
• Inflationary Constraints on Type IIA String Theory
• On Classical de Sitter Vacua in String Theory
• Open problems on classical de Sitter solutions
• Eternal Inflation in Swampy Landscapes
• Gravitational Instabilities and Censorship of Large Scalar Field Excursions

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