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arXiv · hep-th/0312313

D-particles and the localization limit in quantum gravity

Giovanni Amelino-Camelia·Luisa Doplicher
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Abstract

Some recent studies of the properties of D-particles suggest that in string theory a rather conventional description of spacetime might be available up to scales that are significantly smaller than the Planck length. We test this expectation by analyzing the localization of a space-time event marked by the collision of two D-particles. We find that a spatial coordinate of the event can indeed be determined with better-than-Planckian accuracy, at the price of a rather large uncertainty in the time coordinate. We then explore the implications of these results for the popular quantum-gravity intuition which assigns to the Planck length the role of absolute limit on localization.

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Giovanni Amelino-Camelia, Luisa Doplicher. 2003-12-30. D-particles and the localization limit in quantum gravity. https://doi.org/10.1088/0264-9381%2F21%2F21%2F011

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