Janus Points and Arrows of Time
Julian Barbour, Tim Koslowski, and Flavio Mercati
TL;DR
This paper clarifies and strengthens the argument that arrows of time naturally emerge in unconfined systems without needing improbable selection principles, addressing recent misconceptions.
Contribution
It provides a clearer and more robust demonstration that arrows of time are inherent in unconfined systems, countering recent claims to the contrary.
Findings
Arrows of time necessarily arise in unconfined systems
No improbable selection principle is required for the emergence of time arrows
The demonstration is strengthened and clarified
Abstract
We clarify and strengthen our demonstration that arrows of time necessarily arise in unconfined systems. Contrary to a recent claim, this does not require an improbable selection principle.
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Taxonomy
TopicsQuantum Mechanics and Applications · Advanced Thermodynamics and Statistical Mechanics · Statistical Mechanics and Entropy