# Raiders of the lost spacetime

@article{Wuthrich2014RaidersOT, title={Raiders of the lost spacetime}, author={Christian Wuthrich}, journal={arXiv: History and Philosophy of Physics}, year={2014}, volume={13}, pages={297-335} }

Spacetime as we know and love it is lost in most approaches to quantum gravity. For many of these approaches, as inchoate and incomplete as they may be, one of the main challenges is to relate what they take to be the fundamental non-spatiotemporal structure of the world back to the classical spacetime of general relativity (GR). The present essay investigates how spacetime is lost and how it may be regained in one major approach to quantum gravity, loop quantum gravity.

## 52 Citations

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According to a number of approaches in theoretical physics, spacetime does not exist fundamentally. Rather, spacetime exists by depending on another, more fundamental, non-spatiotemporal structure. A…

### The emergence of space and time

- Philosophy, Physics
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Research in quantum gravity strongly suggests that our world in not fundamentally spatiotemporal, but that spacetime may only emerge in some sense from a non-spatiotemporal structure, as this paper…

### The Measurement Problem for Emergent Spacetime in Loop Quantum Gravity

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Contemporary research programs in fundamental physics appear to suggest that there could be two (physical) times---or none at all. This essay articulates these possibilities in the context of quantum…

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