Quantum spacetime: what do we know?

Details Quantum spacetime: what do we know? Quantum spacetime: what do we know?

1999-03-12

arxiv.org/abs/gr-qc/9903045v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

To appear on: "Physics Meets Philosophy at the Planck scale", C Callender N Hugget eds, Cambridge University Press

Scientific paper

This is a contribution to a book on quantum gravity and philosophy. I discuss nature and origin of the problem of quantum gravity. I examine the knowledge that may guide us in addressing this problem, and the reliability of such knowledge. In particular, I discuss the subtle modification of the notions of space and time engendered by general relativity, and how these might merge into quantum theory. I also present some reflections on methodological questions, and on some general issues in philosophy of science which are are raised by, or a relevant for, the research on quantum gravity.

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