Probing spacetime foam with extragalactic sources

Details Probing spacetime foam with extragalactic sources Probing spacetime foam with extragalactic sources

2005-08-29

arxiv.org/abs/gr-qc/0508121v2

Phys.Rev.Lett. 96 (2006) 051301

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

LaTeX, 11 pages, 1 figure; version submitted to PRL; several references added; very useful comments and suggestions by Eric Pe

Scientific paper

10.1103/PhysRevLett.96.051301

Due to quantum fluctuations, spacetime is probably ``foamy'' on very small scales. We propose to detect this texture of spacetime foam by looking for core-halo structures in the images of distant quasars. We find that the Very Large Telescope interferometer will be on the verge of being able to probe the fabric of spacetime when it reaches its design performance. Our method also allows us to use spacetime foam physics and physics of computation to infer the existence of dark energy/matter, independent of the evidence from recent cosmological observations.

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