From: Amara Graps (amara@amara.com)
Date: Thu Apr 03 2003 - 05:28:20 MST
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
This archive was generated by hypermail 2.1.5 : Thu Apr 03 2003 - 05:39:42 MST