标题： 陈-西蒙斯引力中交叉双谱的新形状 显示英文标题

标题： New shape for cross-bispectra in Chern-Simons gravity

摘要： 陈-西蒙斯引力在暴胀期间以产生引力子鬼而闻名，这会抑制与宇宙微波背景观测相关的宇称破坏功率谱。 在这项工作中，我们表明允许暴胀的初始条件偏离标准的邦奇-戴维斯态可以增强标量张量交叉三谱中的宇称破坏非高斯性。 我们的结果显示，在扁平面构型下，交叉三谱有显著的额外贡献，为限制宇称破坏引力提供了一条新途径。 显示英文摘要

摘要： Chern-Simons gravity is known to suffer from graviton ghost production during inflation, which suppresses the parity-violating power spectrum at scales relevant to cosmic microwave background observations. In this work, we show that allowing the initial conditions of inflation to deviate from the standard Bunch-Davies state can enhance parity-violating non-Gaussianity in the scalar-tensor cross-bispectra. Our results reveal a significant additional contribution to the cross-bispectra in the flattened configuration, offering a new avenue to constrain parity-violating gravity.