标题： 圈量子宇宙学的观测 implication 显示英文标题

标题： The Observational Implications of Loop Quantum Cosmology

摘要： 本文我们考虑嵌入环量子宇宙学框架中的一个现实的暴涨模型。这里的暴涨阶段由量子反弹阶段所precede。我们展示出暴涨参数如何依赖于收缩、反弹前阶段所建立的初始条件。我们的研究表明反弹相容易设置合适的暴涨初始条件。随后我们研究可能由于量子引力修正而产生的观测效应。我们对Barbero-Immirzi参数$\gamma$、临界密度$\rho_{\text{c}}$和参数$\lambda$进行了初步的观测约束。在下一步中，我们研究扰动功率谱的影响。我们计算了从反弹和联合反弹+暴涨阶段得出的扰动谱。基于这些研究，我们指出一种可能的方法来关联量子宇宙学模型与天文观测。利用Sachs-Wolfe近似，我们计算了超水平CMB各向异性谱。我们表明量子宇宙学效应可以自然地解释低阶CMB多极子的抑制。我们表明这里不需要微调，并且该模型与观测一致。我们也分析了量子宇宙学的其他可能探测方法，并讨论了它们实施的可能性。 显示英文摘要

摘要： In this paper we consider realistic model of inflation embedded in the framework of loop quantum cosmology. Phase of inflation is preceded here by the phase of a quantum bounce. We show how parameters of inflation depend on the initial conditions established in the contracting, pre-bounce phase. Our investigations indicate that phase of the bounce easily sets proper initial conditions for the inflation. Subsequently we study observational effects that might arise due to the quantum gravitational modifications. We perform preliminary observational constraints for the Barbero-Immirzi parameter $\gamma$, critical density $\rho_{\text{c}}$ and parameter $\lambda$. In the next step we study effects on power spectrum of perturbations. We calculate spectrum of perturbations from the bounce and from the joined bounce+inflation phase. Based on these studies we indicate possible way to relate quantum cosmological models with the astronomical observations. Using the Sachs-Wolfe approximation we calculate spectrum of the super-horizontal CMB anisotropies. We show that quantum cosmological effects can, in the natural way, explain suppression of the low CMB multipoles. We show that fine-tuning is not required here and model is consistent with observations. We also analyse other possible probes of the quantum cosmologies and discuss perspectives of their implementation.