An accessible overview of general relativity, the cosmological constant problem, and the multiverse as a hypothetical solution, while noting the unresolved measure problem of eternal inflation.
Populating the Whole Landscape
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abstract
Every de Sitter vacuum can transition to every other de Sitter vacuum despite any obstacle, despite intervening anti-de Sitter sinks, despite not being connected by an instanton. Eternal inflation populates the whole landscape.
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2026 1verdicts
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A gentle introduction to the cosmological multiverse
An accessible overview of general relativity, the cosmological constant problem, and the multiverse as a hypothetical solution, while noting the unresolved measure problem of eternal inflation.