InfoGraviton

journal club on aspects of information, quantum theory, and gravity

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An Introduction to Linear Memory Effects

28 Jan 2025

The memory effect is a simple, yet profound, prediction of general relativity and other field theories with massless propagating modes. Over the last decade, it has been noticed that it bears close connections to topics in the infrared structure of general relativity and gauge theory, and it is expected to be measured in future gravitational wave detectors. In this seminar, I provide a pedagogical introduction to linear memory in many theories of interest, ranging from the scalar wave equation to modified gravity.

Níckolas de Aguiar Alves. In preparation.
A. Tolish and R. M. Wald. “Retarded Fields of Null Particles and the Memory Effect”. Physical Review D 89, 064008 (2014). arXiv: 1401.5831 [gr-qc].
L. Bieri and D. Garfinkle. “An electromagnetic analog of gravitational wave memory”. Classical and Quantum Gravity 30, 195009 (2013). arXiv: 1307.5098 [gr-qc].
L. Bieri and A. Polnarev. “Gravitational Wave Displacement and Velocity Memory Effects”. Classical and Quantum Gravity 41, 135012 (2024). arXiv: 2402.02594 [gr-qc].