D-particles and the localization limit in quantum gravity
arXiv:hep-th/0312313 · doi:10.1088/0264-9381/21/21/011
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.
18 pages, LaTex
References in corpus (19)
- Quantum gravity and minimum length
- Relativity in space-times with short-distance structure governed by an observer-independent (Planckian) length scale
- Testable scenario for Relativity with minimum-length
- Generalized Lorentz invariance with an invariant energy scale
- D-branes and Short Distances in String Theory
- D-brane dynamics
- Doubly Special Relativity
- An interferometric gravitational wave detector as a quantum-gravity apparatus
- Generalized Uncertainty Principle, Extra-dimensions and Holography
- A Comment on Zero-brane Quantum Mechanics
- Quantum Measurement, Gravitation, and Locality
- D-particle Dynamics and Bound States
- Doubly Special Relativity and de Sitter space
- Limits on the Measurability of Space-time Distances in (the Semi-classical Approximation of) Quantum Gravity
- Quantum gravity and spin 1/2 particles effective dynamics
- Gravity-wave interferometers as probes of a low-energy effective quantum gravity
- Measuring the foaminess of space-time with gravity-wave interferometers
- On Local Observations in Quantum Gravity
- Calogero-Sutherland Particles as Quasisemions