To appear as Chapter 25 of 2014 Particle Data Group Review of Particle Physics
http://arxiv.org/abs/1401.0046

For a PDF version of the article, click here.

Table of Contents

• REPULSIVE GRAVITY AND COSMIC ACCELERATION
• THEORIES OF COSMIC ACCELERATION
• Dark Energy or Modified Gravity ?
• Expansion History and Growth of Structure
• Parameters
• OBSERVATIONAL PROBES
• CURRENT CONSTRAINTS ON EXPANSION, GROWTH, AND DARK ENERGY
• SUMMARY AND OUTLOOK
• RERERENCES