English

Consistently violating the non-Gaussian consistency relation

Cosmology and Nongalactic Astrophysics 2015-12-22 v3 General Relativity and Quantum Cosmology High Energy Physics - Phenomenology High Energy Physics - Theory

Abstract

Non-attractor models of inflation are characterized by the super-horizon evolution of curvature perturbations, introducing a violation of the non-Gaussian consistency relation between the bispectrum's squeezed limit and the power spectrum's spectral index. In this work we show that the bispectrum's squeezed limit of non-attractor models continues to respect a relation dictated by the evolution of the background. We show how to derive this relation using only symmetry arguments, without ever needing to solve the equations of motion for the perturbations.

Keywords

Cite

@article{arxiv.1502.03458,
  title  = {Consistently violating the non-Gaussian consistency relation},
  author = {Sander Mooij and Gonzalo A. Palma},
  journal= {arXiv preprint arXiv:1502.03458},
  year   = {2015}
}

Comments

26 pages, v3: matches published version (JCAP)

R2 v1 2026-06-22T08:27:59.254Z