Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ncimb.108..911t&link_type=abstract
Nuovo Cimento B, Vol. 108, No. 8, p. 911 - 930
Astronomy and Astrophysics
Astrophysics
5
Universe: Pulsations
Scientific paper
It is shown that the pulsating model of the universe can be derived from Einstein's field equations with the addition of a traceless, negative-energy source tensor. Bounds on the negative-energy density are given. Earlier works on negative-energy sources as well as prevention of singularities are discussed. The results support earlier findings that one can obtain a bounce without modifying Einstein's field equations, but instead, by violating the Hawking-Penrose strong energy condition. The negative-energy tensor is interpreted as the partially uncompensated zero-point energy of a weakly interacting, neutral massless fermion. Since the model predicts a cosmic background of weakly interacting negative-energy radiation, greater in intensity than the CMB radiation, it can be experimentally falsified. A subordinate idea of the model, that there was an astrophysical - rather than a Planckian-size bounce, can be falsified by suitable computer simulations.
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