Tachyonic chaos and causality in the open universe.

Details Tachyonic chaos and causality in the open universe. Tachyonic chaos and causality in the open universe.

May 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996csf.....7..753t&link_type=abstract

Chaos Solitons Fractals, Vol. 7, No. 5, p. 753 - 768

Physics

21

Cosmology: Robertson-Walker Metric, Cosmology: Elementary Particles, Cosmology: Chaos

Scientific paper

The chaoticity of classical world lines in extended Robertson-Walker cosmologies is pointed out and related to the fractal limit set of the covering group of the spacelike slices. The author investigates the possible existence of tachyons (faster-than-light particles) in this context. The cosmic time and the 3-space co-ordinates comoving with the galactic background provide a distinguished frame of reference. With respect to this comoving frame the causality of tachyonic events can be unambiguously defined, contrary to Minkowski space. He studies the dynamics of tachyons and shows that tachyonic world-lines are chaotic in the center of the spacelike slices.

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