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A semiclassical tetrahedron. (English) Zbl 1107.83026

Summary: We construct a macroscopic semiclassical state for a quantum tetrahedron. The expectation values of the geometrical operators representing the volume, areas and dihedral angles are peaked around assigned classical values, with vanishing relative uncertainties.

MSC:

83C45 Quantization of the gravitational field
81T20 Quantum field theory on curved space or space-time backgrounds