For the Bianchi type I space-time (vacuum or with a massless scalar field), the loop quantum cosmology bounce can be viewed as a rapid transition between two classical solutions, with a simple transformation rule relating the Kasner exponents of the two epochs. This transformation rule can be extended to other Bianchi space-times under the assumption that during the loop quantum cosmology bounce the contribution of the spatial curvature to the Hamiltonian constraint is negligible compared to the kinetic terms. For the vacuum Bianchi type IX space-time there are transformation rules for how each of the parameters characterizing the Kasner epochs change during the bounce. This provides a quantum gravity extension to the Mixmaster dynamics of general relativity, and may have interesting implications for the Belinski-Khalatnikov-Lifshitz conjecture.
机构:
Penn State Univ, Dept Phys, Inst Gravitat & Cosmos, University Pk, PA 16802 USAPenn State Univ, Dept Phys, Inst Gravitat & Cosmos, University Pk, PA 16802 USA
机构:
Waseda Univ, Dept Phys, Tokyo, JapanWaseda Univ, Dept Phys, Tokyo, Japan
Navascues, Beatriz Elizaga
Marugan, Guillermo Mena A.
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CSIC, Inst Estruct Mat IEM, Madrid, SpainWaseda Univ, Dept Phys, Tokyo, Japan
Marugan, Guillermo Mena A.
Vidotto, Francesca
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Univ Western Ontario, Rotman Inst Philosophy, Dept Phys & Astron, London, ON, Canada
Univ Western Ontario, Rotman Inst Philosophy, Dept Philosophy, London, ON, CanadaWaseda Univ, Dept Phys, Tokyo, Japan
Vidotto, Francesca
FRONTIERS IN ASTRONOMY AND SPACE SCIENCES,
2022,
9