A heuristic argument that a clock's own gravity stops its wave-packet from spreading, reducing the minimum length-measurement uncertainty from the Karolyhazy scale l_P^(2/3) l^(1/3) to the Planck length.
Critique of proposed limit to space--time measurement, based on Wigner's clocks and mirrors
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Based on a relation between inertial time intervals and the Riemannian curvature, we show that space--time uncertainty derived by Ng and van Dam implies absurd uncertainties of the Riemannian curvature.
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Salecker-Wigner-Karolyhazy Gedankenexperiment in light of the self-gravity
A heuristic argument that a clock's own gravity stops its wave-packet from spreading, reducing the minimum length-measurement uncertainty from the Karolyhazy scale l_P^(2/3) l^(1/3) to the Planck length.