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Gravitationally induced inhibitions of dispersion according to the Schr\"odinger-Newton Equation

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arxiv 1105.1921 v1 pith:FZQKVOB2 submitted 2011-05-10 gr-qc math-phmath.MPquant-ph

Domenico Giulini (1 , 2) , André Gro{ss}ardt (1 , 2) ((1) ZARM - University of Bremen - Germany , (2) Institute for Theoretical Physics - University of Hannover - Germany) This is my paper · ORCID
classification gr-qcmath-phmath.MPquant-ph
keywords becausedispersionequationgravitationallyinducedinhibitionsodinger-newtonquantum
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abstract

We re-consider the time dependent Schr\"odinger-Newton equation as a model for the self-gravitational interaction of a quantum system. We numerically locate the onset of gravitationally induced inhibitions of dispersion of Gaussian wave packets and find them to occur at mass values more than 6 orders of magnitude higher than reported by Salzman and Carlip (2006, 2008), namely at about $10^{10}\,\mathrm{u}$. This fits much better to simple analytical estimates but unfortunately also questions the experimental realisability of the proposed laboratory test of quantum gravity in the foreseeable future, not just because of large masses, but also because of the need to provide sufficiently long coherence times.

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  1. Salecker-Wigner-Karolyhazy Gedankenexperiment in light of the self-gravity

    gr-qc 2019-08 conditional novelty 5.0 of 10

    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.

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