OperaV1, Main, Exploration, bibRecord, 000925

Beyond the speed of light on Finsler spacetimes

Identifieur interne : 000925 ( Main/Exploration ); précédent : 000924; suivant : 000926

Beyond the speed of light on Finsler spacetimes

Auteurs : Christian Pfeifer [Allemagne] ; Mattias N. R. Wohlfarth [Allemagne]

Source :

Physics letters. Section B [ 0370-2693 ] ; 2012.

RBID : Pascal:12-0233174

Descripteurs français

Pascal (Inist)
- Vitesse lumière, Espace temps, Champ massif, Théorie champ, Champ scalaire, Excitation particule, Dispersion vitesse, Relation dispersion, Gravitation quantique, Modèle, Fermion, Neutrino, Particule sans masse, Particule élémentaire.
Wicri :
- topic : Particule élémentaire.

English descriptors

KwdEn :
- Dispersion relations, Elementary particles, Fermions, Field theories, Light velocity, Massive field, Massless particles, Models, Neutrinos, Particle excitation, Quantum gravity, Scalar fields, Space-time, Velocity dispersion.

Abstract

As a prototypical massive field theory we study the scalar field on the recently introduced Finsler spacetimes. We show that particle excitations exist that propagate faster than the speed of light recognized as the boundary velocity of observers. This effect appears already in Finsler spacetime geometries with very small departures from Lorentzian metric geometry. It switches on for a sufficiently large ratio of the particle four-momentum and mass, and is the consequence of a modified version of the Coleman-Glashow velocity dispersion relation. The momentum dispersion relation on Finsler spacetimes is shown to be the same as on metric spacetimes, which differs from many quantum gravity models. If similar relations resulted for fermions on Finsler spacetimes, these generalized geometries could explain the potential observation of superluminal neutrinos claimed by the Opera Collaboration.

Affiliations:

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Le document en format XML

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<front><div type="abstract" xml:lang="en">As a prototypical massive field theory we study the scalar field on the recently introduced Finsler spacetimes. We show that particle excitations exist that propagate faster than the speed of light recognized as the boundary velocity of observers. This effect appears already in Finsler spacetime geometries with very small departures from Lorentzian metric geometry. It switches on for a sufficiently large ratio of the particle four-momentum and mass, and is the consequence of a modified version of the Coleman-Glashow velocity dispersion relation. The momentum dispersion relation on Finsler spacetimes is shown to be the same as on metric spacetimes, which differs from many quantum gravity models. If similar relations resulted for fermions on Finsler spacetimes, these generalized geometries could explain the potential observation of superluminal neutrinos claimed by the Opera Collaboration.</div>
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Beyond the speed of light on Finsler spacetimes

Beyond the speed of light on Finsler spacetimes

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri