Memory effect in Yang-Mills theory

Abstract

We study the empirical realisation of the memory effect in Yang-Mills theory, especially in view of the classical vs. quantum nature of the theory. Gauge invariant analysis of memory in classical U(1) electrodynamics and its observation by total change of transverse momentum of a charge is reviewed. Gauge fixing leads to a determination of a gauge transformation at infinity. An example of Yang-Mills memory then is obtained by reinterpreting known results on interactions of a quark and a large high energy nucleus in the theory of Color Glass Condensate. The memory signal is again a kick in transverse momentum, but it is only obtained in quantum theory after fixing the gauge, after summing over an ensemble of classical processes.

16 pages, 2 figures; v2: discussions on experimental detection of memories, refs., and a calculation of the magnitude of the correlator in sec. 4 added, typos corrected, published version

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Cited by in corpus (10)

• On electromagnetic and colour memory in even dimensions
• Kundt geometries and memory effects in the Brans-Dicke theory of gravity
• Nonlinear Einstein-Power-Yang-Mills AdS Black Holes: From Quantum Tunneling to Aschenbach Effect
• Note on electromagnetic memories
• Electromagnetic memory in arbitrary curved space-times
• Asymptotic symmetries and memories of gauge theories in FLRW spacetimes
• Topics in Asymptotic Symmetries and Infrared Effects
• Gravitational wave memory in conformally flat spacetimes
• Memory effect in Yang-Mills theory with an axion
• Gravitational wave memory in wormhole spacetimes