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- W1980839932 abstract "Dust-filled Friedmann universes have only one dynamical degree of freedom and one constraint (the Hamiltonian constraint), which plays the role of the generator of time evolution. In a corresponding quantum model the latter gives rise to a one-dimensional quantum mechanical wave equation. This equation is formulated in Ashtekar-type variables in two different factor orderings of the constraint operator, which turn out to require different Hilbert spaces. For each choice the spectra of the total mass and the maximal radius of the universe are discrete and for large quantum numbers both versions have acceptable classical limits." @default.
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- W1980839932 date "2001-02-06" @default.
- W1980839932 modified "2023-09-26" @default.
- W1980839932 title "A quantized closed Friedmann model" @default.
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- W1980839932 doi "https://doi.org/10.1088/0264-9381/18/4/312" @default.
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