A Nonlocal Realization of MOND that Interpolates from Cosmology to Gravitationally Bound Systems

TL;DR

This paper presents a unified nonlocal gravity model that transitions from cosmological phenomena typically attributed to dark matter to gravitationally bound systems exhibiting MOND-like behavior.

Contribution

The work introduces a single nonlocal gravity model that seamlessly interpolates between cosmological effects and MOND in bound systems.

Findings

Reproduces cosmic microwave background and structure formation

Realizes MOND behavior in gravitationally bound systems

Derives from nonperturbative quantum gravitational corrections

Abstract

Nonlocal modifications of gravity derive from corrections to the quantum gravitational stress tensor which grow nonperturbatively strong during primordial inflation and may persist to the current epoch. Phenomenological constructions have been given that realize MOND in gravitationally bound systems and, separately, reproduce all the cosmological phenomena usually ascribed to dark matter, including the cosmic microwave background radiation, baryon acoustic oscillations and linearized structure formation. In this work we exhibit a single model that interpolates between the two regimes.