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DTSTART;TZID=Atlantic/Canary:20141117T123000
DTEND;TZID=Atlantic/Canary:20141117T133000
UID:iactalks-703
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/703
CREATED:2014-11-17T12:30:00+00:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY: Is General Relativity a restricted theory? 
DESCRIPTION: Is General Relativity a restricted theory? \nProf. Martín Riv
 as\n\nThings should be made simple, but not simpler.  What we want to show
  is that General Relativity, as it stands today, can  be considered as a g
 ravitational theory of low velocity spinless  matter, and therefore a rest
 ricted theory of gravitation.  Gravity is understood as a geometrization o
 f spacetime. But spacetime is  also the manifold of the boundary values of
  the spinless point particle  in a variational approach. Since all known e
 lementary matter, baryons,  leptons and gauge bosons are spinning objects,
  it means that the  manifold, which we call the kinematical space, where w
 e play the game of  the variational formalism of a classical elementary pa
 rticle must be  greater than spacetime.  Mathematics shows that this manif
 old for any arbitrary mechanical system  is always a Finsler metric space,
  such that the variational formalism  can be interpreted as a geodesic pro
 blem on this metric space.  This manifold is just the flat Minkowski space
  for the free spinless  particle.  Any interaction modifies its flat 
 Finsler metric as  gravitation does.  The same thing happens for the spinn
 ing objects, but now the Finsler  metric space has more dimensions and its
  metric is modified by any  interaction, so that to reduce gravity to the 
 modification only of the  metric of the spacetime submanifold is to make a
  simpler theory, the  gravitational theory of spinless matter.  Even the u
 sual assumption that the modification of the metric only  produces a Riema
 nnian metric of the spacetime is also a restriction  because in general th
 e coefficients for a Finsler metric, are also  dependent on the velocities
 . Removal of the velocity dependence of  metric coefficients is equivalent
  to consider the restriction to low  velocity matter.  In the spirit of un
 ification of all forces, gravity cannot produce, in  principle, a differen
 t and simpler geometrization than any other  interaction.  References: arX
 iv: 1203.4076
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