English

KSW criterion in large field models

High Energy Physics - Theory 2024-06-13 v1 General Relativity and Quantum Cosmology

Abstract

We extend the analytic description of complex no-boundary solutions in the context of inflation to large field models. We discuss the Kontsevich-Segal-Witten (KSW) criterion and find it is satisfied in small field models, while in large field models it depends on an integral involving V(ϕ)V'(\phi) over the range of inflation. It follows that the criterion does not truly constrain inflationary phenomenology since one can complete any inflaton potential beyond observable scales so as to satisfy KSW.

Cite

@article{arxiv.2406.08422,
  title  = {KSW criterion in large field models},
  author = {Oliver Janssen},
  journal= {arXiv preprint arXiv:2406.08422},
  year   = {2024}
}

Comments

15 pages

R2 v1 2026-06-28T17:03:26.451Z