The double copy: from optics to quantum gravity

Abstract

Recently, an intriguing relationship (the "double copy") has been discovered between theories like electromagnetism, and gravity. This potentially gives us a new way to think about gravity, and there are also practical applications involving the efficient calculation of gravitational observables, and also how to simulate gravity using optical systems. In this tutorial, we will review what is known about the double copy, and argue that now is the perfect time for researchers in optics and / or condensed matter to become interested in this fascinating correspondence.

Interdisciplinary tutorial to be submitted to the Journal of the Optical Society of America. Comments and feedback are welcome!

References in corpus (10)

• New Relations for Gauge-Theory Amplitudes
• Black holes and the double copy
• The Kinematic Algebra From the Self-Dual Sector
• The Kerr-Schild double copy in curved spacetime
• Yang-Mills origin of gravitational symmetries
• Scattering on plane waves and the double copy
• A Twistorial Foundation for the Classical Double Copy
• Extended solutions for the biadjoint scalar field
• Classification of Electromagnetic and Gravitational Hopfions by Algebraic Type
• Anti-Self-Dual Spacetimes, Gravitational Instantons and Knotted Zeros of the Weyl Tensor