The Best of the Physics arXiv (week ending 22 December, 2019)

This week’s most thought-provoking papers from the Physics arXiv

Origin of Earth’s Water: Sources and Constraints

Can We Travel to the Past? Irreversible Physics Along Closed Timelike Curves

Tools for Mathematical Ludology

Applications of Near-Term Photonic Quantum Computers: Software and Algorithms

Rethinking Superdeterminism

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