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<p>I review the scientific and epistemological intuition behind Lemaître’s primeval atom hypothesis of 1931 and argue this resonates with the observer-centric interpretation of the no-boundary hypothesis developed in the years 2010. A sufficiently refined but realistic model of the observer as a quantum system described by the theory strongly affects the no-boundary probability distribution. In the context of inflation, it changes the dominant saddle from one with minimal inflation to one where the universe starts out in the regime of eternal inflation.</p>

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A Page-Like Transition in Quantum Cosmology

  • 期刊论文

  • 发表日期：

    2026年1月19日

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  • Thomas Hertog

摘要

I review the scientific and epistemological intuition behind Lemaître’s primeval atom hypothesis of 1931 and argue this resonates with the observer-centric interpretation of the no-boundary hypothesis developed in the years 2010. A sufficiently refined but realistic model of the observer as a quantum system described by the theory strongly affects the no-boundary probability distribution. In the context of inflation, it changes the dominant saddle from one with minimal inflation to one where the universe starts out in the regime of eternal inflation.