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Abstract: I consider a thought experiment measuring the decoherence for quasiclassicalsuperpositions of gravitational field. A version of the hole argument allows toprove that a covariant background-free theory is completely unable to definethe outcome of this experiment and is therefore not viable. Instead, theresults of experiments of this type allow to reconstruct a common backgroundshared by all superposed gravitational fields.



Author: I. Schmelzer

Source: https://arxiv.org/







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