Hubble Hullabaloo and String Cosmology

TL;DR

This paper investigates potential solutions to the Hubble constant discrepancy by exploring string theory-inspired models, examining their implications for dark energy, dark matter, and collider searches.

Contribution

It introduces a novel approach linking string theory concepts with cosmological measurements and collider physics to address the Hubble tension.

Findings

Potential models that reconcile Hubble constant measurements

Implications for dark energy and dark matter physics

Predictions for Z' searches at LHC Run3

Abstract

The discrepancy in measurements of the Hubble constant indicates new physics in dark energy, dark matter, or both. Drawing inspiration from string theory, we explore possible solutions to overcome the $H_0$ problem. We investigate the interplay between the cosmological determination of $\Delta N_{\rm eff}{}$ and $Z'{}$ searches at the LHC Run3.