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arXiv 2001.08568gr-qc
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原始宇宙中无与伦比的量子真空

Unrivaled Quantum Vacuum in the Primordial Universe

Davood Momeni

摘要:

在暴胀前(后)的原始宇宙中,可能存在由冷气体重子、辐射和早期后暴胀宇宙学常数组成的早期宇宙相。我证明了在重子时代,量子真空是唯一的。利用经典时空中具有最大共形对称性的质量最小耦合标量场的标准量子化方案,证明了标量模具有有效质量$m_{eff}^2\approx 0$(或$m_{eff}^2\approx constant$).当适形时间$η$与充盈结束时间$η=η_c$保持如此接近时,该论点有效。重子物质的能量密度在暴胀边界处发散,在未来晚期消失。此外,我还论证了在非常早期的加速阶段,当辐射在与早期宇宙学常数的激烈竞争中占主导地位时,标量场$m\propto \sqrtΛ$的精细调谐质量也提供了一个独特的量子真空。原因是有效质量最终会消失。一个值得注意的观察是,所有其他可能的真空态都被永恒地“压缩”了。

英文摘要:

In a primordial universe pre(post)-inflationary era , there could be phases of early universe made of cold gas baryons, radiation and early post inflationary cosmological constant. I showed that in the baryonic epoch, the quantum vacuum is unique. By using the standard quantization scheme for a massive minimally coupled scalar field with maximal conformal symmetry in the classical spacetime, I demonstrated that the scalar modes had an effective mass $m_{eff}^2\approx 0$ (or $m_{eff}^2\approx constant$). This argument validated when the conformal time $η$ kept so close to the inflation ending time $η=η_c$. The energy density of the baryonic matter diverged at the inflation border and vanishes at the late time future. Furthermore I argued that at very early accelerating epoch when the radiation was the dominant part in the close competition with the early time cosmological constant, fine tuned mass of the scalar field $m\propto \sqrtΛ$ also provided a unique quantum vacuum. The reason is that the effective mass eventually is vanished. A remarkable observation was that all the other possible vacuum states "squeezed" eternally.

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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