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• W2810447697 abstract "We study the Wheeler-DeWitt (WDW) equation close to the Big-Bang. We argue that an interaction dominated fluid (speed of sound equal to the speed of light), if present, would dominate during such an early phase. Such a fluid with $p=rhopropto1/a^{6}$ generates a term in the potential of the wave function of the WDW equation proportional to $-1/a^{2}. $This very peculiar quantum potential, which embodies a spontaneous breaking of dilatation invariance, has some very remarkable consequences for the wave function of the Universe: $Psi(a)$ vanishes at the Big-Bang: $Psi(0)=0$; the wave function $Psi(a)$ is always real; a superselection rule assures that the system is confined to $ageq0$ without the need of imposing any additional artificial barrier for unphysical negative $a$. These results do not depend on the operator-ordering problem of the WDW equation." @default.
• W2810447697 created "2018-07-10" @default.
• W2810447697 creator A5034665552 @default.
• W2810447697 creator A5088491787 @default.
• W2810447697 date "2019-01-01" @default.
• W2810447697 modified "2023-10-14" @default.
• W2810447697 title "Wheeler--DeWitt Universe Wave Function in the Presence of Stiff Matter" @default.
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• W2810447697 doi "https://doi.org/10.5506/aphyspolb.50.1607" @default.
• W2810447697 hasPublicationYear "2019" @default.
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