Non-Gaussianity as a particle detector
From MaRDI portal
Publication:1636626
DOI10.1007/JHEP12(2016)040zbMATH Open1390.83465arXiv1607.03735OpenAlexW3106239583MaRDI QIDQ1636626
Author name not available (Why is that?)
Publication date: 12 June 2018
Published in: (Search for Journal in Brave)
Abstract: We study the imprints of massive particles with spin on cosmological correlators. Using the framework of the effective field theory of inflation, we classify the couplings of these particles to the Goldstone boson of broken time translations and the graviton. We show that it is possible to generate observable non-Gaussianity within the regime of validity of the effective theory, as long as the masses of the particles are close to the Hubble scale and their interactions break the approximate conformal symmetry of the inflationary background. We derive explicit shape functions for the scalar and tensor bispectra that can serve as templates for future observational searches.
Full work available at URL: https://arxiv.org/abs/1607.03735
No records found.
No records found.
This page was built for publication: Non-Gaussianity as a particle detector
Report a bug (only for logged in users!)Click here to report a bug for this page (MaRDI item Q1636626)
