dorsal/arxiv
View SchemaTrue energy-momentum tensors are unique. Electrodynamics spin tensor is not zero
| Authors | R. I. Khrapko |
|---|---|
| Categories | |
| ArXiv ID | physics/0102084 |
| URL | https://arxiv.org/abs/physics/0102084 |
Abstract
A true energy-momentum tensor is unique and does not admit an addition of a term. The true electrodynamics' energy-momentum tensor is the Maxwell-Minkowski tensor. It cannot be got with the Lagrange formalism. The canonical energy-momentum and spin tensors are out of all relation to the physical reality. The true electrodynamics' spin tensor is not equal to a zero. So, electrodynamics' ponderomotive action comprises a force from the Maxwell stress tensor and a torque from the spin tensor. A gauge non-invariant expression for the spin tensor is presented and is used for a consideration of a circularly polarized standing wave. A circularly polarized light beam carries a spin angular momentum and an orbital angular momentum. So, we double the beams angular momentum. The Beths experiment is considered.
{
"annotation_id": "6cdf30bf-283d-407b-9d16-dd35362479e4",
"date_created": "2026-03-02T18:00:35.181000Z",
"date_modified": "2026-03-02T18:00:35.181000Z",
"file_hash": "1b88669197651fe50e1139ca8ea96d27c5aea8f1aadd30fe6c20e81494cca303",
"private": false,
"record": {
"abstract": "A true energy-momentum tensor is unique and does not admit an addition of a\nterm. The true electrodynamics\u0027 energy-momentum tensor is the Maxwell-Minkowski\ntensor. It cannot be got with the Lagrange formalism. The canonical\nenergy-momentum and spin tensors are out of all relation to the physical\nreality. The true electrodynamics\u0027 spin tensor is not equal to a zero. So,\nelectrodynamics\u0027 ponderomotive action comprises a force from the Maxwell stress\ntensor and a torque from the spin tensor. A gauge non-invariant expression for\nthe spin tensor is presented and is used for a consideration of a circularly\npolarized standing wave. A circularly polarized light beam carries a spin\nangular momentum and an orbital angular momentum. So, we double the beams\nangular momentum. The Beths experiment is considered.",
"arxiv_id": "physics/0102084",
"authors": [
"R. I. Khrapko"
],
"categories": [
"physics.class-ph"
],
"title": "True energy-momentum tensors are unique. Electrodynamics spin tensor is not zero",
"url": "https://arxiv.org/abs/physics/0102084"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "18b75c4f-8389-4207-9925-db6ab58427ca",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}