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arXiv 1612.07129hep-th
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量子景观多重宇宙的预测

Predictions of the Quantum Landscape Multiverse

Laura Mersini-Houghton

摘要:

2015年普朗克数据发布对允许的非线性模型的类别进行了严格的限制。当前最佳拟合区域倾向于在静止势中向下凹,因为它们产生抑制的张量与标量指数比r。向下凹陷的势有一个负曲率V”<0,因此一个快子质量平方驱动波动。此外,如果场在远离极值的一部分势中滚动,它们的使用可能会成为问题,因为量子宇宙学的半经典近似用于从景观导出宇宙的最可几波函数,并解决量子到经典的过渡,从最陡的下降区域开始崩溃。在这里,我们提出了一种方法来处理这样的潜力,通过反转的度量签名和解决的波函数的宇宙在欧几里德部门。这种方法使我们能够将我们的宇宙起源理论从量子多重宇宙扩展到更一般的凹暴胀势,在这种情况下,直接应用半经典近似是失败的。这里的工作完成了对牛顿势和暴胀势的修正的推导,这些修正源于我们的宇宙与量子景观多元宇宙中所有其他宇宙的量子纠缠,从而导致对两种类型的非线性模型(凹势和凸势)的观测签名的预测。

英文摘要:

The 2015 Planck data release has placed tight constraints on the class of in ationary models allowed. The current best fit region favors concave downwards in ationary potentials, since they produce a suppressed tensor to scalar index ratio r. Concave downward potentials have a negative curvature V"<0, therefore a tachyonic mass square that drives fluctuations. Furthermore, their use can become problematic if the field rolls in a part of the potential away from the extrema, since the semiclassical approximation of quantum cosmology, used for deriving the most probable wavefunction of the universe from the landscape and for addressing the quantum to classical transition, breaks down away from the steepest descent region. We here propose a way of dealing with such potentials by inverting the metric signature and solving for the wavefunction of the universe in the Euclidean sector. This method allows us to extend our theory of the origin of the universe from a quantum multiverse, to a more general class of concave inflationary potentials where a straightforward application of the semiclassical approximation fails. The work here completes the derivation of modifications to the Newtonian potential and to the inflationary potential, which originate from the quantum entanglement of our universe with all others in the quantum landscape multiverse, leading to predictions of observational signatures for both types of in ationary models, concave and convex potentials.

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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