Gravitational Quantum Limit for Length Measurements

Details Gravitational Quantum Limit for Length Measurements Gravitational Quantum Limit for Length Measurements

1998-01-30

arxiv.org/abs/quant-ph/9801074v1

Phys.Lett. A185 (1994) 143-148

Physics

Quantum Physics

6 pages

Scientific paper

10.1016/0375-9601(94)90838-9

We discuss a limit for sensitivity of length measurements which is due to the effect of vacuum fluctuations of gravitational field. This limit is associated with irreducible quantum fluctuations of geodesic distances and it is characterized by a noise spectrum with an order of magnitude mainly determined by Planck length. The gravitational vacuum fluctuations may (in an analysis restricted to questions of principle and when the measurement strategy is optimized) dominate fluctuations added by the measurement apparatus if macroscopic masses, i.e. masses larger than Planck mass, are used.

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