Limitations on the operational definition of spacetime events and quantum gravity

@article{Padmanabhan1987LimitationsOT,
  title={Limitations on the operational definition of spacetime events and quantum gravity},
  author={T Padmanabhan},
  journal={Classical and Quantum Gravity},
  year={1987},
  volume={4},
  pages={L107 - L113}
}
Using simple arguments from general relativity and quantum theory the author shows that it is not possible to devise experiments (or operational procedures) which will measure the position of a particle to an accuracy better then the Planck length (G/c3) approximately=10-33 cm. It is also impossible to synchronise clocks to a precision better than Planck time. The implications of the result are discussed. 

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