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· arXiv 2602.16294

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gr-qc 1

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2026 1

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UNVERDICTED 1

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Modified Entropy from Action Principle

gr-qc · 2026-05-28 · unverdicted · novelty 5.0

Authors add f(R, K) to the Einstein-Hilbert action, obtain higher-derivative-free modified Friedmann equations for flat FRW, and derive a general apparent-horizon entropy expression usable for multiple entropy models.

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  • Modified Entropy from Action Principle gr-qc · 2026-05-28 · unverdicted · none · ref 14

    Authors add f(R, K) to the Einstein-Hilbert action, obtain higher-derivative-free modified Friedmann equations for flat FRW, and derive a general apparent-horizon entropy expression usable for multiple entropy models.