#scalar spectral index
topicscalar spectral index
2 papers · 1 filter
astro-ph.CO2026
Beyond monomial -attractors
Laura Iacconi
The paper investigates inflationary α‑attractor models with a binomial (quadratic + quartic) potential, showing that the quartic term can significantly modify the scalar spectral i…
astro-ph.CO2026
Non-Minimally Coupled Chain Inflation at High Scales
Miguel Barroso Varela, Orfeu Bertolami, Katherine Freese +1
The paper investigates how a non‑minimal coupling between a scalar field and gravity modifies chain inflation, affecting tunneling rates, the scalar spectral index, and producing a…