论文标题
原始标量和张量功率光谱的均衡不对称性
Parity asymmetry of primordial scalar and tensor power spectra
论文作者
论文摘要
尽管宇宙微波背景（CMB）在很大程度上被认为是均匀的和各向同性的，但CMB角功率光谱的异常似乎是在大角度尺度上打破平等对称性的异常。我们认为，在我们新的通货膨胀量子波动的新结构中，原始标量和张量功率谱可能是不对称的。我们的表述源于弯曲时空中量子场理论的基本问题，在该问题中，我们将基于离散的时空变换（$ \ MATHCAL {p} \ MATHCAL {t} $）的（单场）通胀量子波动的真空结构施加了几何superselection规则。结果，我们估计标量和张量扇区中功率不对称幅度的幅度为$ 10^{ - 4} {\ rm mpc^{ - 1}} \ sims k \ sims k \ sillsim 10^{ - 3} { - 3} {\ rm mpc^{\ rm mpc^{ - 1}} $。特别是，我们预测原始引力波（PGW）的奇偶校验不对称性，并为不同模型（如Starobinsky和$α-$吸引者单场通货膨胀场景）进行量化。
Although the cosmic microwave background (CMB) is largely understood to be homogeneous and isotropic, the CMB angular power spectra present anomalies that seem to break down parity symmetry at large angular scales. We argue that the primordial scalar and tensor power spectra can be parity asymmetric in our new construction of inflationary quantum fluctuations. Our formulation stems from the foundational questions of quantum field theory in curved spacetime in which we impose geometric superselection rules to the vacuum structure for (single-field) inflationary quantum fluctuations based on discrete spacetime transformations ($\mathcal{P}\mathcal{T}$). As a result, we estimate the amplitude of power asymmetry in the scalar and tensor sectors at different scales of $ 10^{-4} {\rm Mpc^{-1}}\lesssim k\lesssim 10^{-3}{\rm Mpc^{-1}}$. In particular, we predict the parity asymmetry for the primordial gravitational waves (PGWs) and quantify it for different models, like Starobinsky and $α-$attractor single-field inflationary scenarios.
