Orientation Memory of Magnetic Dipoles - Archive ouverte HAL
Article Dans Une Revue Physical Review D Année : 2024

Orientation Memory of Magnetic Dipoles

Blagoje Oblak
  • Fonction : Auteur
  • PersonId : 1315424
  • IdRef : 24904174X
Ali Seraj
  • Fonction : Auteur

Résumé

We study the precession caused by electromagnetic radiation on a magnetic dipole located far from the source. As we show, this entails a net rotation of the dipole in the plane orthogonal to the direction of wave propagation, providing an electromagnetic analogue of gyroscopic gravitational memory. Like its gravitational cousin, the precession rate falls off with the square of the distance to the source, and is related to electric-magnetic duality and optical helicity on the celestial sphere. We use a multipolar expansion to compute the memory effect due to localized sources such as moving point charges, and highlight its occurrence in setups that break parity symmetry.

Dates et versions

hal-04093546 , version 1 (10-05-2023)

Identifiants

Citer

Blagoje Oblak, Ali Seraj. Orientation Memory of Magnetic Dipoles. Physical Review D, 2024, 109 (4), pp.044037. ⟨10.1103/PhysRevD.109.044037⟩. ⟨hal-04093546⟩
21 Consultations
0 Téléchargements

Altmetric

Partager

More