论文标题
通货膨胀率在通货膨胀范围内的重力非高斯和平等侵犯
Graviton non-Gaussianities and Parity Violation in the EFT of Inflation
论文作者
论文摘要
我们研究了通货膨胀范围内的重力非高斯。在衍生物中的领先（第二）顺序时，重力双光谱是通过爱因斯坦重力固定的。三阶只有两个捐款。其中一个打破了平等。它们来自直接涉及叶片的操作员：然后，我们期望三分函数中的相当大的非高斯式涉及重力和标量。但是，我们表明，在缓慢滚动的领先顺序下，奇偶校验-ODD操作员不会修改这些混合的相关器。然后，我们确定可以在衍生物中以第四顺序影响重力双光谱的操作员。有两个操作员保留奇偶校验。 We show that one gives a scalar-tensor-tensor three-point function larger than the one computed in Maldacena, 2003 if $M^2_{\rm P}A_{\rm s}/Λ^2\gg 1$ (where $Λ$ is the scale suppressing this operator and $A_{\rm s}$ the amplitude of the scalar power spectrum).该顺序中只有两个奇偶校验运算符。
We study graviton non-Gaussianities in the EFT of Inflation. At leading (second) order in derivatives, the graviton bispectrum is fixed by Einstein gravity. There are only two contributions at third order. One of them breaks parity. They come from operators that directly involve the foliation: we then expect sizable non-Gaussianities in three-point functions involving both gravitons and scalars. However, we show that at leading order in slow roll the parity-odd operator does not modify these mixed correlators. We then identify the operators that can affect the graviton bispectrum at fourth order in derivatives. There are two operators that preserve parity. We show that one gives a scalar-tensor-tensor three-point function larger than the one computed in Maldacena, 2003 if $M^2_{\rm P}A_{\rm s}/Λ^2\gg 1$ (where $Λ$ is the scale suppressing this operator and $A_{\rm s}$ the amplitude of the scalar power spectrum). There are only two parity-odd operators at this order in derivatives.
