InfoGraviton

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

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The Memory Effect and What it Means for Humankind

06 Jun 2024

Níckolas de Aguiar Alves

The memory effect is a prediction in classical general relativity that consists in the fact that, upon the passage of a gravitational wave, a pair of nearby inertial detectors will be permanently displaced. In this seminar, I will review the basic ideas behind the linear memory effect and discuss how it is connected to other infrared aspects of general relativity, such as Weinberg’s soft graviton theorem and the Bondi–Metzner–Sachs group.

• A. Strominger. Lectures on the Infrared Structure of Gravity and Gauge Theory (Princeton University Press: Princeton, NJ, 2018). arXiv: 1703.05448 [hep-th].
• L. Bieri and A. Polnarev. “Gravitational Wave Displacement and Velocity Memory Effects”. Classical and Quantum Gravity 41, 135012 (2024). arXiv: 2402.02594 [gr-qc].