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2016

Predictions of the Quantum Landscape Multiverse

Mersini-Houghton, Laura

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The 2015 Planck data release has placed tight constraints on the class of in ationary models allowed.

The current best fit region favors concave downwards in ationary potentials, since they produce a suppressed tensor to scalar index ratio r.
Concave downward potentials have a negative curvature V"<0, therefore a tachyonic mass square that drives fluctuations.
Furthermore, their use can become problematic if the field rolls in a part of the potential away from the extrema, since the semiclassical approximation of quantum cosmology, used for deriving the most probable wavefunction of the universe from the landscape and for addressing the quantum to classical transition, breaks down away from the steepest descent region.

Predictions of the Quantum Landscape Multiverse · Around

Built on

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Similar

L. Mersini-Houghton, Class. Quant. Grav. 22
2006
Cited alongside, same era.
R. Holman and L. Mersini-Houghton, Phys. Rev. D 74
2006
Cited alongside, same era.
L. Boubekeur and D. H. Lyth, JCAP 0507
Original
2007
Cited alongside, same era.
R. Holman, L. Mersini-Houghton and T. Takahashi, Phys. Rev. D 77
Original
2009
Cited alongside, same era.
P. A. R. Ade et al
Original
Cited in the paper.
P. A. R. Ade et al
Original
Cited in the paper.
Eleonora Di Valentino and Laura Mersini-Houghton ”Testing Predictions of the Quantum Multiverse”, in preparation
Original
Cited in the paper.

Then

A. T. Mithani and A. Vilenkin, JCAP 1304
Original
2013
Later among the works it cites.
P. A. R. Ade et al
Original
2014
Later among the works it cites.
A. A. Starobinsky, Phys. Lett. B 91
Original
2014
Later among the works it cites.
J. B. Hartle, S. W. Hawking and T. Hertog, arXiv:1205.3807 [hep-th]; J. B. Hartle, S. W. Hawking and T. Hertog, JCAP 1401
Original
2014
Later among the works it cites.

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