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- W1978753211 abstract "We consider the quantum evolution of the space-independent mode of a $ensuremath{lambda}{ensuremath{varphi}}^{4}$ theory as a minisuperspace in the space of all $ensuremath{varphi}$. The motion of the wave packet in the minisuperspace is compared to the motion of a wave packet in a larger minisuperspace consisting of the original minisuperspace plus one space-dependent mode. By comparing the motion of the two packets we develop criteria that tell us when the quantum evolution in the space-independent minisuperspace gives us useful information about the true evolution in the larger minisuperspace. These criteria serve as a toy model for similar (but much more complex) criteria that will tell us whether or when quantized gravitational minisuperspaces can possibly give any useful information about quantum gravity." @default.
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- W1978753211 date "1993-05-15" @default.
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- W1978753211 title "Nonlinear model of a quantum minisuperspace system with back reaction" @default.
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- W1978753211 doi "https://doi.org/10.1103/physrevd.47.4443" @default.
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