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Beyond the speed of light on Finsler spacetimes

Identifieur interne : 000093 ( PascalFrancis/Corpus ); précédent : 000092; suivant : 000094

Beyond the speed of light on Finsler spacetimes

Auteurs : Christian Pfeifer ; Mattias N. R. Wohlfarth

Source :

RBID : Pascal:12-0233174

Descripteurs français

English descriptors

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.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

pA  
A01 01  1    @0 0370-2693
A02 01      @0 PYLBAJ
A03   1    @0 Phys. lett., Sect. B
A05       @2 712
A06       @2 3
A08 01  1  ENG  @1 Beyond the speed of light on Finsler spacetimes
A11 01  1    @1 PFEIFER (Christian)
A11 02  1    @1 WOHLFARTH (Mattias N. R.)
A14 01      @1 II. Institut für Theoretische Physik und Zentrum für Mathematische Physik, Universtität Hamburg. Luruper Cltaussee 149 @2 22761 Hamburg @3 DEU @Z 1 aut. @Z 2 aut.
A20       @1 284-288
A21       @1 2012
A23 01      @0 ENG
A43 01      @1 INIST @2 9425B @5 354000507912850220
A44       @0 0000 @1 © 2012 INIST-CNRS. All rights reserved.
A45       @0 15 ref.
A47 01  1    @0 12-0233174
A60       @1 P
A61       @0 A
A64 01  1    @0 Physics letters. Section B
A66 01      @0 GBR
C01 01    ENG  @0 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.
C02 01  3    @0 001B00
C02 02  3    @0 001B20
C02 03  3    @0 001B10
C03 01  3  FRE  @0 Vitesse lumière @5 26
C03 01  3  ENG  @0 Light velocity @5 26
C03 02  3  FRE  @0 Espace temps @5 27
C03 02  3  ENG  @0 Space-time @5 27
C03 03  X  FRE  @0 Champ massif @5 28
C03 03  X  ENG  @0 Massive field @5 28
C03 03  X  SPA  @0 Campo masivo @5 28
C03 04  3  FRE  @0 Théorie champ @5 29
C03 04  3  ENG  @0 Field theories @5 29
C03 05  3  FRE  @0 Champ scalaire @5 30
C03 05  3  ENG  @0 Scalar fields @5 30
C03 06  X  FRE  @0 Excitation particule @5 31
C03 06  X  ENG  @0 Particle excitation @5 31
C03 06  X  SPA  @0 Excitación partícula @5 31
C03 07  X  FRE  @0 Dispersion vitesse @5 32
C03 07  X  ENG  @0 Velocity dispersion @5 32
C03 07  X  SPA  @0 Dispersión velocidad @5 32
C03 08  3  FRE  @0 Relation dispersion @5 33
C03 08  3  ENG  @0 Dispersion relations @5 33
C03 09  3  FRE  @0 Gravitation quantique @5 34
C03 09  3  ENG  @0 Quantum gravity @5 34
C03 10  X  FRE  @0 Modèle @5 35
C03 10  X  ENG  @0 Models @5 35
C03 10  X  SPA  @0 Modelo @5 35
C03 11  3  FRE  @0 Fermion @5 36
C03 11  3  ENG  @0 Fermions @5 36
C03 12  3  FRE  @0 Neutrino @5 37
C03 12  3  ENG  @0 Neutrinos @5 37
C03 13  3  FRE  @0 Particule sans masse @5 38
C03 13  3  ENG  @0 Massless particles @5 38
C03 14  3  FRE  @0 Particule élémentaire @5 39
C03 14  3  ENG  @0 Elementary particles @5 39
N21       @1 177
N44 01      @1 OTO
N82       @1 OTO

Format Inist (serveur)

NO : PASCAL 12-0233174 INIST
ET : Beyond the speed of light on Finsler spacetimes
AU : PFEIFER (Christian); WOHLFARTH (Mattias N. R.)
AF : II. Institut für Theoretische Physik und Zentrum für Mathematische Physik, Universtität Hamburg. Luruper Cltaussee 149/22761 Hamburg/Allemagne (1 aut., 2 aut.)
DT : Publication en série; Niveau analytique
SO : Physics letters. Section B; ISSN 0370-2693; Coden PYLBAJ; Royaume-Uni; Da. 2012; Vol. 712; No. 3; Pp. 284-288; Bibl. 15 ref.
LA : Anglais
EA : 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.
CC : 001B00; 001B20; 001B10
FD : 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
ED : Light velocity; Space-time; Massive field; Field theories; Scalar fields; Particle excitation; Velocity dispersion; Dispersion relations; Quantum gravity; Models; Fermions; Neutrinos; Massless particles; Elementary particles
SD : Campo masivo; Excitación partícula; Dispersión velocidad; Modelo
LO : INIST-9425B.354000507912850220
ID : 12-0233174

Links to Exploration step

Pascal:12-0233174

Le document en format XML

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