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arXiv 2110.03050hep-thgr-qc
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量子宇宙的概率分布

Probability distribution for the quantum universe

Alex Kehagias, Hervé Partouche, Nicolaos Toumbas

摘要:

我们确定的内积的希尔伯特空间的波函数的宇宙通过施加厄米性的量子哈密顿量的上下文中的minisuperspace模型。相应的量子概率密度成功地再现了经典概率分布在$\hbar \to 0$限制,封闭的宇宙充满了一个完美的流体指数$w$。当$-1/3<w\le 1$时,波函数是可归一化的,量子概率密度在大爆炸/大挤压奇点处变得非常小,至少在半经典水平上。量子期望值的物理几何量,发散的经典奇点,被证明是有限的。

英文摘要:

We determine the inner product on the Hilbert space of wavefunctions of the universe by imposing the Hermiticity of the quantum Hamiltonian in the context of the minisuperspace model. The corresponding quantum probability density reproduces successfully the classical probability distribution in the $\hbar \to 0$ limit, for closed universes filled with a perfect fluid of index $w$. When $-1/3<w\le 1$, the wavefunction is normalizable and the quantum probability density becomes vanishingly small at the big bang/big crunch singularities, at least at the semi-classical level. Quantum expectation values of physical geometrical quantities, which diverge classically at the singularities, are shown to be finite.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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