Related papers: Positional decoherence

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The paper has been withdrawn by the author, due to it being fundamentally flawed. The author apologizes for any inconvenience it may have caused.

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This paper has been withdrawn by the authors due to some fatal errors in the analysis.

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This paper has been withdrawn by the author due to essential mistakes in some previous versions.

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This paper has been withdrawn by the author due to serious error found in main argument.

This paper has been withdrawn as it has been superseded by 0808.2697

This paper has been withdrawn by the author, because it is now part of an enlarged version entitled "Time functions as utilities" arXiv:0909.0890

The author decided to withdraw this paper by 1) an error in Lemma 5.11 (and 5.12) which requires some justification; 2) the main result of this paper suffers overlap with arXiv:1203.5254; 3) the author decided to split arXiv:1203.5254 into…

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