Article

A Master Equation for Screening in Luminal Horndeski Gravity

2026-05-19

Abstract excerpt

Determining the active screening mechanism from a general scalar–tensor Lagrangian remains a challenging problem. As a diagnostic tool, we present a systematic study of nonlinear cosmological perturbations in luminal Horndeski theories. Working in the \(\alpha\)-basis on a flat FLRW background, we derive and organise the full set of unapproximated second-order perturbation equations, and systematically apply the q...

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Literature Corpus work: c24461bc-969b-54f2-b9f9-eac18a3979fe
DOI: 10.32388/but6fb

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