2011

Cosmological constant in spinfoam cosmology

Bianchi, Eugenio, Krajewski, Thomas, Rovelli, Carlo et al.

Understand

We consider a simple modification of the amplitude defining the dynamics of loop quantum gravity, corresponding to the introduction of the cosmological constant, and possibly related to the SL(2,C)q extension of the theory recently considered by Fairbairn-Meusburger and Han.

We show that in the context of spinfoam cosmology, this modification yields the de Sitter cosmological solution.

Built on

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Original
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Earlier work this paper cites.
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Earlier work this paper cites.
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Earlier work this paper cites.
C. Rovelli and F. Vidotto, “Stepping out of Homogeneity in Loop Quantum Cosmology,” Class. Quant. Grav
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Earlier work this paper cites.
M. Bojowald and R. Tavakol, “Recollapsing quantum cosmologies and the question of entropy,” Phys. Rev
Original
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Earlier work this paper cites.

Similar

E. Bentivegna and T. Pawlowski, “Anti-deSitter universe dynamics in LQC,” Phys. Rev
Original
2008
Cited alongside, same era.
A. Ashtekar, M. Campiglia, and A. Henderson, “Loop Quantum Cosmology and Spin Foams,” Phys. Lett
Original
2009
Cited alongside, same era.
O. Lahav and A. R. Liddle, “Review article for The Review of Particle Physics 2010 (the “Particle Data Book”),” arXiv:1002.3488
Original
2010
Cited alongside, same era.
E. Bianchi and C. Rovelli, “Is dark energy really a mystery?,” Nature
Original
2010
Cited alongside, same era.
E. Bianchi, C. Rovelli, and F. Vidotto, “Towards Spinfoam Cosmology,” Phys. Rev
Original
2010
Cited alongside, same era.
E. Bianchi and C. Rovelli, “Why all these prejudices against a constant?,” arXiv:1002.3966
Original
Cited in the paper.
C. Rovelli, “A new look at loop quantum gravity,” arXiv:1004.1780
Original
Cited in the paper.
W. J. Fairbairn and C. Meusburger, “Quantum deformation of two four-dimensional spin foam models,” arXiv:1012.4784
Original
Cited in the paper.
M. Han, “4-dimensional Spin-foam Model with Quantum Lorentz Group,” arXiv:1012.4216
Original
Cited in the paper.
E. Bianchi, E. Magliaro, and C. Perini, “Spinfoams in the holomorphic representation,” arXiv:1004.4550
Original
Cited in the paper.
E. Magliaro, A. Marciano, and C. Perini, “Coherent states for FLRW space-times,” arXiv:1011.5676
Original
Cited in the paper.
W. Kaminski and T. Pawlowski, “The LQC evolution operator of FRW universe with positive cosmological constant,” arXiv:0912.0162
Original
Cited in the paper.

Then

A. Perez and D. Pranzetti, “On the regularization of the constraints algebra of Quantum Gravity in 2+1 dimensions with non-vanishing cosmological constant,” Class. Quant. Grav
Original
2010
Later among the works it cites.
E. Bianchi, E. Magliaro, and C. Perini, “Coherent spin-networks,” Phys. Rev
Original
2010
Later among the works it cites.
C. Rovelli and F. Vidotto, “On the spinfoam expansion in cosmology,” Class. Quant. Grav
Original
2010
Later among the works it cites.
A. Ashtekar, M. Campiglia, and A. Henderson, “Casting Loop Quantum Cosmology in the Spin Foam Paradigm,” Class. Quant. Grav
Original
2010
Later among the works it cites.

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