标题： 非高斯性的运行的首次约束 显示英文标题

标题： First constraints on the running of non-Gaussianity

摘要： 我们使用WMAP温度图的数据来限制一种与尺度相关的流行“局部”原始非高斯性的模型推广。 在允许参数fNL随尺度k变化的模型中，fNL(k) = fNL*(k/k_piv)^n，我们约束其变化率为n = 0.30(+1.9)(-1.2)在95%置信度下，对幅度fNL*进行边缘化处理。 这些约束在一定程度上取决于分配给两个参数的先验概率。 在不久的将来，结合普朗克卫星和大尺度结构调查的约束预计会将这一限制提高一个数量级，并有效地约束一类暴胀模型。 显示英文摘要

摘要： We use data from the WMAP temperature maps to constrain a scale-dependent generalization of the popular 'local' model for primordial non-Gaussianity. In the model where the parameter fNL is allowed to run with scale k, fNL(k) = fNL* (k/k_piv)^n, we constrain the running to be n = 0.30(+1.9)(-1.2) at 95% confidence, marginalized over the amplitude fNL*. The constraints depend somewhat on the prior probabilities assigned to the two parameters. In the near future, constraints from a combination of Planck and large-scale structure surveys are expected to improve this limit by about an order of magnitude and usefully constrain classes of inflationary models.