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How Mensky’s Continuous Measurement can Emerge from GRW on Larger Time Scales

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Abstract

In this paper we will show how “weighted path integral” proposed by Mensky and Kent can emerge out of Ghirardi Rimini Weber (GRW) model.

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Notes

  1. Some versions of GRW model subject just one particle to a hit instead of the entire configuration of n particles. In those cases, we would have a single \(\delta \)-function in \(\mathbb {R}^3\) instead of superposition of n such \(\delta \)-function; but this won’t affect the ultimate conclusion that the reality is in \(\mathbb {R}^3\). In any case, as far as this paper is concerned, our assumption is that we subject a configuration of n-particles to simultaneous hit.

  2. This argument has also been made in Section 4 of [7], where we were referring to the previous version of the current paper (arXiv:1305.7516, version 1). I chose to reiterate it in this paper since this is really the bridge between the two papers, equally relevent to both of them.

References

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  2. Mensky, M.B.: Quantum Measurement and Decoherence. Kluwer Academic Publishers, Dordrecht (2000)

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  3. Kent, A.: Path integrals and reality. arXiv:1305.6565

  4. Ghirardi, G.C., Rimini, A., Weber, T.: A model for a unied quantum description of macroscopic and microscopic systems. In: Accardi, L., et al. (eds.) Quantum Probability and Applications. Springer, Berlin (1985)

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  5. Ghirardi, G.C., Rimini, A., Weber, T.: Unied dynamics for microscopic and macroscopic systems. Phys. Rev. D 34, 470 (1986)

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  6. Ghirardi, G.C., Grassi, R., Benatti, F.: Describing the macroscopic world: closing the circle within the dynamical reduction program. Found. Phys. 25, 5 (1955). This is the basic paper in which the interpretation has been presented and discussed for the first time

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Correspondence to Roman Sverdlov.

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Sverdlov, R. How Mensky’s Continuous Measurement can Emerge from GRW on Larger Time Scales. Found Phys 46, 825–835 (2016). https://doi.org/10.1007/s10701-016-0004-0

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