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arXiv · 2403.08752

A local model for the optical energy and momentum transfer in dielectric media and the microscopic origin of Abraham's force density

B. Anghinoni·M. Partanen·N. G. C. Astrath
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Abstract

We report on the continuity equations for linear momentum and energy associated to a recently introduced electromagnetic formulation based on classical dipolar sources [Eur. Phys. J. Plus 138, 1034 (2023)]. When connected to the mass-polariton quasi-particle dynamics, these equations provide a consistent microscopic description of the local optical energy and momentum transfer inside dielectric media, called microscopic mass-polariton formulation. This procedure also unveils the true microscopic origin of the long-known Abraham optical force density as an interplay between induced dipoles and mechanical stresses generated within the material.

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B. Anghinoni, M. Partanen, N. G. C. Astrath. 2024-03-13. A local model for the optical energy and momentum transfer in dielectric media and the microscopic origin of Abraham's force density. https://doi.org/10.1103/physreva.110.033513

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