Eternity is unstable

Astronomy and Astrophysics – Astronomy

Scientific paper

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Big Bang Cosmology, Energy Dissipation, Gravitation Theory, Isotropy, Universe, Baryons, Black Body Radiation, Black Holes (Astronomy), Elementary Particles, Entropy, Quantum Mechanics, Relativity, Stability

Scientific paper

It is shown that if the universe expands forever, it will become increasingly irregular in the far future. In particular, it is demonstrated that the Hawking black-hole evaporation process causes a vortical instability to develop in spatially homogeneous spacetimes which are approximately k = 0 Friedmann universes. The increase of irregularity is associated with the increase of gravitational-field entropy, thus providing a novel picture of the universal heat death.

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