Spin is not a moment of momentum

Mathematics. Physics. Mechanics


Аuthors

Khrapko R. I.

Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia

e-mail: khrapko_ri@hotmail.com

Abstract

The modern idea that spin of an electromagnetic radiation is a moment of a linear momentum seems to be incorrect. This fact is of great importance for calculating the torque, which experiences an absorber of a circularly polarized electromagnetic beam. We show that the classical monographs of Jackson and Becker contain inaccurate calculation in the case of a radiation produced by a source localized in a finite region of space. We use a spin tensor introduced into the electrodynamics previously when calculating the total torque.

Keywords:

spin tensor, Belinfante-Rosenfeld procedure


Download

mai.ru — informational site MAI

Copyright © 2000-2021 by MAI

Вход