标题： 内在$B$模态功率的谱级重构演示 显示英文标题

标题： A Demonstration of Spectral Level Reconstruction of Intrinsic $B$-mode Power

摘要： 我们研究了通过求解线性方程组来重建原初$B$-模功率的前景和后果，假设透镜势以及透镜化极化谱已经获得。 我们发现，这种重建技术可能非常有用，可以用来估计原初引力波的幅度或更具体地说，张量与标量比值的值。 我们还看到，可以在几个百的多极数（$\ell\sim500$）范围内对内在$B$-模功率进行宇宙方差受限的重建，这足以估计张量与标量比值。 由于小尺度宇宙微波背景（CMB，以下简称）各向异性不是由暴胀期间产生的原初引力波引起的。 我们还发现，这种重建算法中可能可以绕过仪器噪声的影响。 已经展示了一个简单的示例，说明如何消除仪器噪声，该示例设想了类似COrE的未来空间任务，结合Planck 2013宇宙学。 显示英文摘要

摘要： We investigate the prospects and consequences of the spectral level reconstruction of primordial $B$-mode power by solving the systems of linear equations assuming that the lensing potential together with the lensed polarization spectra are already in hand. We find that this reconstruction technique may be very useful to have an estimate of the amplitude of primordial gravity waves or more specifically the value of tensor to scalar ratio. We also see that one can have cosmic variance limited reconstruction of the intrinsic $B$-mode power up to few hundred multipoles ($\ell\sim500$) which is more than sufficient to have an estimate of the tensor to scalar ratio. Since the small scale cosmic microwave background (CMB henceforth) anisotropies are not sourced by the primordial gravity waves generated during inflation. We also find that the impact of instrumental noise may be bypassed within this reconstruction algorithm. A simple demonstration for the nullification of the instrumental noise anticipating COrE like futuristic space mission complemented with Planck 2013 cosmology has been presented.