Bounds on length scales of classical spacetime foam models

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dc.creatorBernadotte, S.
dc.creatorKlinkhamer, F. R.
dc.date2006-10-17
dc.date2007-01-24
dc.date.accessioned2026-07-07T10:25:44Z
dc.date.available2026-07-07T10:25:44Z
dc.descriptionSimple models of a classical spacetime foam are considered, which consist of identical static defects embedded in Minkowski spacetime. Plane-wave solutions of the vacuum Maxwell equations with appropriate boundary conditions at the defect surfaces are obtained in the long-wavelength limit. The corresponding dispersion relations ω^2=ω^2(\vec{k}) are calculated, in particular, the coefficients of the quadratic and quartic terms in \vec{k}. Astronomical observations of gamma-ray bursts and ultra-high-energy cosmic rays then place bounds on the coefficients of the dispersion relations and, thereby, on particular combinations of the fundamental length scales of the static spacetime-foam models considered. Spacetime foam models with a single length scale are excluded, even models with a length scale close to the Planck length (as long as a classical spacetime remains relevant).
dc.description22 pages with revtex4, v5: published version
dc.identifierhttps://arxiv.org/abs/hep-ph/0610216
dc.identifierhttp://arxiv.org/abs/hep-ph/0610216
dc.identifierPhys.Rev.D75:024028,2007
dc.identifierdoi:10.1103/PhysRevD.75.024028
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/176638
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Theory
dc.titleBounds on length scales of classical spacetime foam models
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