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J. Ambjørn, J. Jurkiewicz and R. Loll, Nucl. Phys. B 610
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Similar

J. Ambjørn, J. Jurkiewicz and R. Loll, Phys. Rev. Lett. 93
2004
Cited alongside, same era.
J. Ambjørn, J. Jurkiewicz and R. Loll, Phys. Rev. D 72
2005
Cited alongside, same era.
J. Ambjørn, A. Görlich, J. Jurkiewicz and R. Loll, to appear
Cited in the paper.

Then

J. Ambjørn, J. Jurkiewicz and R. Loll, Phys. Lett. B 607
2005
Later among the works it cites.
M. Reuter and F. Saueressig, arXiv:0708.1317 [hep-th]. D. F. Litim, Phys. Rev. Lett. 92
Original
2005
Later among the works it cites.

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2007

Planckian Birth of the Quantum de Sitter Universe

Ambjorn, J., Gorlich, A., Jurkiewicz, J. et al.

Understand

We show that the quantum universe emerging from a nonperturbative, Lorentzian sum-over-geometries can be described with high accuracy by a four-dimensional de Sitter spacetime.

By a scaling analysis involving Newton's constant, we establish that the linear size of the quantum universes under study is in between 17 and 28 Planck lengths.
Somewhat surprisingly, the measured quantum fluctuations around the de Sitter universe in this regime are to good approximation still describable semiclassically.
The numerical evidence presented comes from a regularization of quantum gravity in terms of causal dynamical triangulations.