Bounds on EFT's in an expanding Universe

2023/12/12 by Mariana Carrillo González, González, Mariana Carrillo · 2 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #High Energy Physics - Theory (hep-th) #Pulsars and Gravitational Waves Research

paper · pdf · doi:10.48550/arxiv.2312.07651

openalex publication_date 2023/12/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We find bounds on the Wilson coefficients of effective field theories (EFTs) living in a Universe undergoing expansion by requiring that its modes do not propagate further than a minimally coupled photon by a resolvable amount. To do so, we compute the spatial shift suffered by the EFT modes at a fixed time slice within the WKB approximation and the regime of validity of the EFT. We analyze the bounds arising on shift-symmetric scalars and curved space generalizations of Galileons.

Cited by

• Weak Gravity Conjecture in the sky: gravitational waves from preheating in Einstein-Maxwell-Scalar EFT
• Scalar Quasinormal modes in Reissner--Nordström black holes: implications for Weak Gravity Conjecture

Related

• On the Asymptotic Nature of Cosmological Effective Theories
• Consistency of Scalar and Vector Effective Field Theories
• Positivity-causality competition: a road to ultimate EFT consistency constraints
• (Non)-projective bounds on gravitational EFT
• Causal Bounds on EFTs with anomalies with a Pseudoscalar, Photons, and Gravitons