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• W2311963582 abstract "We present a quantum model of the vacuum Bianchi-IX dynamics. It is based on four main elements. First, we use a compound quantization procedure: an affine coherent state quantization for isotropic variables and a Weyl quantization for anisotropic ones. Second, inspired by standard approaches in molecular physics, we make an adiabatic approximation (Born-Oppenheimer-like approximation). Third, we expand the anisotropy potential about its minimum in order to deal with its harmonic approximation. Fourth, we develop an analytical treatment on the semiclassical level. The resolution of the classical singularity occurs due to a repulsive potential generated by the affine quantization. This procedure shows that during contraction the quantum energy of anisotropic degrees of freedom grows much slower than the classical one. Furthermore, far from the quantum bounce, the classical recollapse is reproduced. Our treatment is put in the general context of methods of molecular physics, which can include both adiabatic and nonadiabatic approximations." @default.
• W2311963582 created "2016-06-24" @default.
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• W2311963582 date "2015-12-08" @default.
• W2311963582 modified "2023-10-14" @default.
• W2311963582 title "Singularity avoidance in a quantum model of the Mixmaster universe" @default.
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• W2311963582 doi "https://doi.org/10.1103/physrevd.92.124018" @default.
• W2311963582 hasPublicationYear "2015" @default.
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