Within a Liouville approach to noncritical string theory, we discuss space-time foam effects on the propagation of low-energy particles. We find an induced frequency-dependent dispersion in the propagation of a wave packet, and observe that this would affect the outcome of measurements involving low-energy particles as probes. In particular, the maximum possible order of magnitude of the space-time foam effects would give rise to an error in the measurement of distance comparable to that independently obtained in some recent heuristic quantum-gravity analyses. We also briefly compare these error estimates with the precision of astrophysical measurements.
Distance measurement and wave dispersion in a Liouville-string approach to quantum gravity / AMELINO-CAMELIA, Giovanni; John, Ellis; N. E., Mavromatos; D. V., Nanopoulos. - In: INTERNATIONAL JOURNAL OF MODERN PHYSICS A. - ISSN 0217-751X. - 12:03(1997), pp. 607-623. [10.1142/s0217751x97000566]
Distance measurement and wave dispersion in a Liouville-string approach to quantum gravity
AMELINO-CAMELIA, Giovanni;
1997
Abstract
Within a Liouville approach to noncritical string theory, we discuss space-time foam effects on the propagation of low-energy particles. We find an induced frequency-dependent dispersion in the propagation of a wave packet, and observe that this would affect the outcome of measurements involving low-energy particles as probes. In particular, the maximum possible order of magnitude of the space-time foam effects would give rise to an error in the measurement of distance comparable to that independently obtained in some recent heuristic quantum-gravity analyses. We also briefly compare these error estimates with the precision of astrophysical measurements.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.