Where was past low-entropy?

Carlo Rovelli

Where was past low-entropy?

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arxiv 1812.03578 v2 pith:3KNNLL6K submitted 2018-12-09 gr-qc astro-ph.CO

Carlo Rovelli This is my paper · ORCID

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keywords low-entropyearlyanswersarguingavailablecommondiscussgravity

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I identify where precisely is low-entropy located in the early universe, arguing that some common answers overplay the role of gravity. I discuss the available interpretations of the "improbability" of this early low-entropy.

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Elementary considerations on possible entropy-driven cosmological evolutions
gr-qc 2025-01 conditional novelty 5.0 of 10

In the entropy-modified Friedmann framework, sustained growth of the entropy source (ḟ/f > 0) makes the universe converge to an effective de Sitter state with density (ḟ/f)²/K², and current data bound the required sou...

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