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arXiv 1609.02830gr-qcastro-ph.COhep-phhep-th
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量子宇宙学与暴胀谱的演化

Quantum Cosmology and the Evolution of Inflationary Spectra

Alexander Y. Kamenshchik, Alessandro Tronconi, Giovanni Venturi

摘要:

我们说明它是如何可能计算的光谱上的原始标量/张量扰动的量子引力效应从规范的,惠勒-德威特,量子宇宙学的方法。复合物质引力系统是通过波恩-奥本海默方法分析的,其中引力与重自由度和物质(这里用标量场表示)与轻自由度相关联。一旦确定了独立的自由度,系统就被正则量化。然后得到了控制原始光谱动力学的微分方程及其量子引力修正,并将其应用于不同的暴胀演化。最后,分析结果进行了比较,通过蒙特卡洛马尔可夫链技术和估计的自由参数,我们的方法最后得到的结果与以前的比较。

英文摘要:

We illustrate how it is possible to calculate the quantum gravitational effects on the spectra of primordial scalar/tensor perturbations starting from the canonical, Wheeler-De Witt, approach to quantum cosmology. The composite matter-gravity system is analysed through a Born-Oppenheimer approach in which gravitation is associated with the heavy degrees of freedom and matter (here represented by a scalar field) with the light ones. Once the independent degrees of freedom are identified the system is canonically quantised. The differential equation governing the dynamics of the primordial spectra with its quantum-gravitational corrections is then obtained and is applied to diverse inflationary evolutions. Finally, the analytical results are compared to observations through a Monte Carlo Markov Chain technique and an estimate of the free parameters of our approach is finally presented and the results obtained are compared with previous ones.

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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