论文标题
Harrison-Zel'Dovich Spectrum是否回来了？ $ n_s \ sim 1 $的ACT偏好及其与Planck的不和谐
Is the Harrison-Zel'dovich spectrum coming back? ACT preference for $n_s \sim 1$ and its discordance with Planck
论文作者
论文摘要
Atacama宇宙学望远镜（ACT）的数据发布4显示了与Harrison-Zel'Dovich原始频谱（$ n_s = 1.009 \ pm 0.015 $）的协议，引入了张力，其显着性为99.3 \％$ $ CL，并从Planck Satellite satellite satellite。标量光谱指数值的差异既不能通过添加大规模结构信息也不减轻，也不可以通过低多极极化数据来缓解。我们讨论了可能依赖于忽略ACT的极化测量或扩展理论不同部门的张力的可能途径。
The Data Release 4 of the Atacama Cosmology Telescope (ACT) shows an agreement with an Harrison-Zel'dovich primordial spectrum ($n_s=1.009 \pm 0.015$), introducing a tension with a significance of $99.3\%$ CL with the results from the Planck satellite. The discrepancy on the value of the scalar spectral index is neither alleviated with the addition of large scale structure information nor with the low multipole polarization data. We discuss possible avenues to alleviate the tension relying on either neglecting polarization measurements from ACT or in extending different sectors of the theory.
