Infrared surprises in the de Sitter universe
Ugo Moschella
TL;DR
This paper explores unexpected phenomena in de Sitter Quantum Field Theory that differ fundamentally from Minkowskian QFT, highlighting the importance of considering the unique properties of de Sitter space even with a small cosmological constant.
Contribution
It identifies and discusses surprising features of de Sitter QFT that challenge the assumptions based on Minkowski spacetime, emphasizing the theory's distinct nature.
Findings
De Sitter QFT exhibits phenomena without Minkowskian counterparts.
Standard Minkowskian intuition can lead to errors in de Sitter contexts.
De Sitter QFT fundamentally differs from relativistic Minkowskian QFT.
Abstract
We describe a few unexpected features of de Sitter Quantum Field Theory that have no Minkowskian counterparts. These phenomena show that even when the cosmological constant is tiny a Minkowskian way of fast thinking about de Sitter can lead to mistakes and that de Sitter QFT is essentially different from standard relativistic (Minkowskian) QFT.
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Taxonomy
TopicsCosmology and Gravitation Theories · Black Holes and Theoretical Physics · Particle physics theoretical and experimental studies