Three Quantum Aspects of Gravity

Details Three Quantum Aspects of Gravity Three Quantum Aspects of Gravity

1997-11-25

arxiv.org/abs/gr-qc/9711075v1

Chin.J.Phys.35:804-808,1997

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Invited paper to appear in the Festscrift celebrating 90th birthday of Professor Ta-You Wu

Scientific paper

It is argued that (a) In the quantum realm test-particle masses have non-trivial observability which induces a non-geometric element in gravity, (b) Any theory of quantum gravity, on fundamental grounds, must contain an element of non-locality that makes position measurements non-commutative, and (c) The classical notion of free fall does not readily generalize to the quantum regime.

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