Spacetime and the Philosophical Challenge of Quantum Gravity

  title={Spacetime and the Philosophical Challenge of Quantum Gravity},
  author={Jeff Butterfield and C. J. Isham},
We survey some philosophical aspects of the search for a quantum theory of gravity, emphasising how quantum gravity throws into doubt the treatment of spacetime common to the two ‘ingredient theories’ (quantum theory and general relativity), as a 4-dimensional manifold equipped with a Lorentzian metric. After an introduction (Section 1), we briefly review the conceptual problems of the ingredient theories (Section 2) and introduce the enterprise of quantum gravity (Section 3). We then describe… CONTINUE READING

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