De Sitter Quantum Breaking, Swampland Conjectures and Thermal Strings

Abstract

We argue that under certain assumptions the quantum break time approach and the trans-Planckian censorship conjecture both lead to de Sitter swampland constraints of the same functional form. It is a well known fact that the quantum energy-momentum tensor in the Bunch-Davies vacuum computed in the static patch of dS breaks some of the isometries. Proposing that this is a manifestation of quantum breaking of dS, we analyze some of its consequences. In particular, this leads to a thermal matter component that can be generalized to string theory in an obvious way. Imposing a censorship of quantum breaking, we recover the no eternal inflation bound in the low temperature regime, while the stronger bound from the dS swampland conjecture follows under a few reasonable assumptions about the still mysterious, presumably topological, high-temperature regime of string theory.

60 pages, 12 figures, v2: major revision of section 2, final version to appear in JHEP

References in corpus (21)

• On the Geometry of the String Landscape and the Swampland
• The Swampland: Introduction and Review
• The String Landscape and the Swampland
• Lectures on the Swampland Program in String Compactifications
• Black Hole Bound on the Number of Species and Quantum Gravity at LHC
• Inflationary Constraints on Type IIA String Theory
• Cosmological Dark Energy: Prospects for a Dynamical Theory
• Dimension and Dimensional Reduction in Quantum Gravity
• Resolution of Hagedorn singularity in superstrings with gravito-magnetic fluxes
• de Sitter Space as a Glauber-Sudarshan State
• Four-dimensional de Sitter space is a Glauber-Sudarshan state in string theory
• Cosmological Trans-Planckian Conjectures are not Effective
• Crisis on Infinite Earths: Short-lived de Sitter Vacua in the String Theory Landscape
• Distance Conjecture and De-Sitter Quantum Gravity
• The Black Hole Entropy Distance Conjecture and Black Hole Evaporation
• Quantum Spacetime Instability and Breakdown of Semiclassical Gravity
• Inflation and Decoupling
• Topological Gravity as the Early Phase of Our Universe
• Thermal Duality Confronts Entropy: A New Approach to String Thermodynamics?
• Odd-dimensional de Sitter Space is Transparent
• Shocks and Information Exchange in de Sitter Space

Cited by in corpus (5)

• The Gravitino and the Swampland
• On de Sitter Spacetime and String Theory
• Remarks on the effects of quantum corrections on moduli stabilization and de Sitter vacua in type IIB string theory
• Shocks and Information Exchange in de Sitter Space
• Quantum Gravity in Species Regime