de Sitter Space is Unstable in Quantum Gravity
Arvind Rajaraman
TL;DR
This paper demonstrates that infrared divergences in de Sitter space caused by graviton loops are resolved through spontaneous breaking of de Sitter invariance, indicating instability in quantum gravity.
Contribution
It reveals that infrared divergences in de Sitter space are resolved by spontaneous symmetry breaking, challenging the assumption of de Sitter invariance in quantum gravity.
Findings
Infrared divergences are resolved by symmetry breaking.
De Sitter space is unstable in quantum gravity.
Spontaneous breaking of invariance occurs due to graviton loops.
Abstract
Graviton loop corrections to observables in de Sitter space often lead to infrared divergences. We show that these infrared divergences are resolved by the spontaneous breaking of de Sitter invariance.
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