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arXiv 2101.01070gr-qcastro-ph.COhep-th
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量子弦宇宙学

Quantum string cosmology

M. Gasperini

摘要:

我们提出了一个简短的审查可能的应用程序的惠勒-德威特方程的宇宙模型的基础上的低能量字符串有效的行动,其特点是由一个初始政权的渐近平坦,低能量,弱耦合演化。特别考虑一类与对偶相关的(但经典上不相关的)背景解,我们将讨论大爆炸前和大爆炸后演化阶段之间量子跃迁的可能性。我们将证明,在这样的背景下,我们的宇宙的诞生是一个量子隧穿或“反隧穿”的初始状态渐近接近弦微扰真空的过程。

英文摘要:

We present a short review of possible applications of the Wheeler-De Witt equation to cosmological models based on the low-energy string effective action, and characterised by an initial regime of asymptotically flat, low energy, weak coupling evolution. Considering in particular a class of duality-related (but classically disconnected) background solutions, we shall discuss the possibility of quantum transitions between the phases of pre-big bang and post-big bang evolution. We will show that it is possible, in such a context, to represent the birth of our Universe as a quantum process of tunneling or "anti-tunneling" from an initial state asymptotically approaching the string perturbative vacuum.

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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