Attractive and Repulsive Gravity

TL;DR

This paper explores conditions under which gravity could be repulsive at large scales, proposing that such repulsion could naturally resolve major cosmological problems like dark energy and universe acceleration.

Contribution

It introduces the idea that gravity may become repulsive on cosmological scales, challenging standard gravitational intuition and offering solutions to key cosmological issues.

Findings

Gravity may act repulsively on large scales.

Repulsive gravity could resolve the flatness and horizon problems.

Repulsive gravity offers a natural explanation for cosmic acceleration.

Abstract

We discuss the circumstances under which gravity might be repulsive rather than attractive. In particular we show why our standard solar system distance scale gravitational intuition need not be a reliable guide to the behavior of gravitational phenomena on altogether larger distance scales such as cosmological, and argue that in fact gravity actually gets to act repulsively on such distance scales. With such repulsion a variety of current cosmological problems (the flatness, horizon, dark matter, universe age, cosmic acceleration and cosmological constant problems) are then all naturally resolved.