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Cosmological Implications of a Possible Class of Particles Able to Travel Faster than Light (abridged version)
Gonzalez-Mestres L.
Taup 95 International Workshop On Theoretical And Phenomenological Aspects Of Underground Physics 5, Toledo : Espagne (1995) - http://hal.in2p3.fr/in2p3-00083747
Physique/Relativité Générale et Cosmologie Quantique
Cosmological Implications of a Possible Class of Particles Able to Travel Faster than Light (abridged version)
L. Gonzalez-Mestres1, 2
1 :  LAPP - Laboratoire d'Annecy le Vieux de Physique des Particules
http://wwwlapp.in2p3.fr/
CNRS : UMR5814 – IN2P3 – Université de Savoie
9 Chemin de Bellevue - BP 110 - 74941 Annecy-le-Vieux CEDEX - France
France
2 :  PCC - Physique Corpusculaire et Cosmologie - Collège de France
CNRS : UMR7553 – IN2P3 – Université Paris VII - Paris Diderot
11, place Marcelin Berthelot - 75231 Paris Cedex 05
France
Superluminal particles are not excluded by particle physics. The apparent Lorentz invariance of the laws of physics does not imply that space-time is indeed minkowskian. Matter made of solutions of Lorentz-invariant equations would feel a relativistic space-time even if the actual space-time had a quite different geometry (f.i. a galilean space-time). If Lorentz invariance is only a property of equations describing a sector of matter at a given scale, an absolute frame (the "vacuum rest frame") may exist without contradicting the minkowskian structure felt by ordinary particles. Then c , the speed of light, will not necessarily be the only critical speed in vacuum and superluminal sectors of matter may equally exist feeling space-times with critical speeds larger than c . We present a discussion of possible cosmological implications of such a scenario, assuming that the superluminal sectors couple weakly to ordinary matter. The universality of the equivalence between inertial and gravitational mass will be lost. The Big Bang scenario will undergo important modifications, and the evolution of the Universe may be strongly influenced by superluminal particles.

Communications sans actes
1995

Taup 95 International Workshop On Theoretical And Phenomenological Aspects Of Underground Physics 5
Toledo
Espagne
17/09/1995
21/09/1995

2 pages, contribution to TAUP 95 , abridged version submitted before the conference. e-mail: gonzalez@lapphp.in2p3.fr

Lien vers le texte intégral : 
http://fr.arXiv.org/abs/gr-qc/9508054