Nonrelativistic Dark-Energy Fluid in a Baby Universe

Details Nonrelativistic Dark-Energy Fluid in a Baby Universe Nonrelativistic Dark-Energy Fluid in a Baby Universe

2008-07-23

arxiv.org/abs/0807.3660v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Scientific paper

We show that the dynamical realization of the acceleration-enlarged Galilean symmetry leads to nonrelativistic massless particles whose energy may be negative. We present a fluid mechanical generalisation of this observation and use it to contruct a nonrelativistic two-dimensional fluid model which possesses solutions with a negative energy density. Considering this model as describing dark energy in a baby universe (two space dimensions) we show that its negative energy density leads to a repulsive gravitational interaction of the fluid with any test body.

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