Quantum cosmic censor: gravitation makes reality undecidable

Details Quantum cosmic censor: gravitation makes reality undecidable Quantum cosmic censor: gravitation makes reality undecidable

2009-03-13

arxiv.org/abs/0903.2438v1

Int. J. Mod. Phys. D17, 2535-2538 (2008)

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

3 Pages, This essay received an honorable mention from the Gravity Research Foundation essay competition in 2008

Scientific paper

10.1142/S0218271808014047

When one takes into account gravitation, the measurement of space and time cannot be carried out with infinite accuracy. When quantum mechanics is reformulated taking into account this lack of accuracy, the resolution of the measurement problem can be implemented via decoherence without the usual pitfalls. The resulting theory has the same physical predictions of quantum mechanics with a reduction postulate, but is radically different, with the quantum states evolving unitarily in terms of the underlying variables. Gravitation therefore makes this worrisome situation, potentially leading to two completely different views of reality, irrelevant from an empirical point of view. It may however be highly relevant from a philosophical point of view.

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