corner
corner
APS » Journals » Phys. Rev. D » Volume 68 » Issue 2
< Previous Article | Next Article >

Phys. Rev. D 68, 024010 (2003) [5 pages]

Bounds on stringy quantum gravity from low energy existing data

Download: PDF (52 kB) Buy this article Export: BibTeX or EndNote (RIS)

Daniel Sudarsky*
Center for Gravitational Physics and Geometry, Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA

Luis Urrutia
Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, A. Postal 70-543, México D.F. 04510, Mexico

Héctor Vucetich†
Instituto de Física, Universidad Nacional Autónoma de México, A. Postal 70-543, México D.F. 04510, Mexico

Received 28 November 2002; published 7 July 2003

We show that existing low energy experiments, searching for the breaking of local Lorentz invariance, set bounds upon string theory inspired quantum gravity models that induce corrections to the propagation of fields. Using the standard observer Lorentz transformations in the D-particle recoil model we find M>~1.2×105MP and v<~2×10-27c for the mass and recoil speed of the D particle, respectively. These bounds are ∼108 times stronger than the latest astrophysical bounds. These results indicate that the stringy scenario for modified dispersion relations is as vulnerable to these types of tests as the loop quantum gravity schemes.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevD.68.024010
DOI:
10.1103/PhysRevD.68.024010
PACS:
04.60.Pp, 04.80.Cc, 11.25.Pm, 11.30.Cp

*On leave of absence from Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de Mexico, A. Postal 70-543, México D.F. 04510, Mexico.

†On leave of absence from Observatorio Astronómico, Universidad Nacional de La Plata, La Plata, Argentina.

 
< Previous Article | Next Article >