[ABSTRACT] A fluctuating space-time produces an unstable world

From: Amara Graps (amara@amara.com)
Date: Thu Apr 03 2003 - 05:28:20 MST

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    http://xxx.lanl.gov/abs/astro-ph/0304050

    Astrophysics, abstract
    astro-ph/0304050

    From: Roberto Aloisio <roberto.aloisio@lngs.infn.it>
    Date: Wed, 2 Apr 2003 11:54:36 GMT (11kb)

    A fluctuating space-time produces an unstable world

    Authors: R. Aloisio (INFN LNGS), P. Blasi (INAF Arcetri), A. Galante (Univ.
    L'Aquila), A.F. Grillo (INFN LNGS)
    Comments: 12 pages, no figures

          Quantum gravitational effects may induce stochastic fluctuations
          in the structure of space-time, to produce a characteristic foamy
          structure. It has been known for some time now that these
          fluctuations may have observable consequencies for the propagation
          of cosmic ray particles over cosmological distances. We note here
          that the same fluctuations, if they exist, imply that some decay
          reactions normally forbidden by elementary conservation laws,
          become kinematically allowed, inducing the decay of particles that
          are seen to be stable in our universe. Due to the strength of the
          prediction, we are led to consider this finding as the most severe
          constraint on the classes of models that may describe the effects
          of gravity on the structure of space-time.

    -- 
    Amara Graps, PhD
    Istituto di Fisica delle Spazio Interplanetario (IFSI)
    Consiglio Nazionale delle Ricerche (CNR), Roma, ITALIA
    Amara.Graps@ifsi.rm.cnr.it
    


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