Double interaction principle for the Lorentz force equation
Abstract
In this paper we study the Lorentz force equation using the Poincare action functional. We show that, if the scalar electric potential has good interactions at infinity and around the origin with the vector magnetic potential, then the Lorentz force equation has at least two periodic solutions with a fixed period. For the proof of our main result we introduce a new minimax theorem for the Poincare action functional that does not require the Palais-Smale compactness condition and provides the existence of twin critical points. The interaction at infinity in the electromagnetic potential implies a weak compactness property of the Poincare action functional, while the interaction around the origin gives the separation property of the functional.
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BibTeX
@misc{bereanu2026double,
title = {{Double interaction principle for the Lorentz force equation}},
author = {Cristain Bereanu and Nicusor Costea},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.22627},
eprint = {2610.22627},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.22627},
note = {CC BY-NC-ND 4.0},
}
RIS
TY - UNPB
TI - Double interaction principle for the Lorentz force equation
AU - Cristain Bereanu
AU - Nicusor Costea
PY - 2026
DA - 2026/10/15
PB - arXiv
DO - 10.48550/arxiv.2610.22627
UR - https://arxiv.org/abs/2610.22627
AB - In this paper we study the Lorentz force equation using the Poincare action functional. We show that, if the scalar electric potential has good interactions at infinity and around the origin with the vector magnetic potential, then the Lorentz force equation has at least two periodic solutions with a fixed period. For the proof of our main result we introduce a new minimax theorem for the Poincare action functional that does not require the Palais-Smale compactness condition and provides the existence of twin critical points. The interaction at infinity in the electromagnetic potential implies a weak compactness property of the Poincare action functional, while the interaction around the origin gives the separation property of the functional.
ER -