Non-Gaussianity beyond the scalar sector: A search for tensor and mixed tensor-scalar bispectra with Planck data
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DOI: 10.1103/pb7x-lp19
Abstract: Primordial gravitational waves could be non-Gaussian, just like primordial scalar perturbations. Although the tensor two-point function has thus-far remained elusive, the three-point function could, in principle, be large enough to be detected in Cosmic Microwave… read more here.
Keywords: tensor; non gaussianity; mixed tensor; tensor scalar ... See more keywords