Dynamics of a relativistic discrete body: rigidity conditions, and covariant equations of motion

Fuente: arXiv
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Main Author: Deriglazov, Alexei A.
Format: Preprint
Published: 2026
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author Deriglazov, Alexei A.
author_facet Deriglazov, Alexei A.
contents Rigidity conditions for a body considered as a discrete system of relativistic particles are proposed. They by themselves do not yet determine an evolution of the system, and some second-order equations must be added to them. Poincaré-covariant equations of motion compatible with these rigidity conditions are proposed and discussed. The resulting theory has the expected six dynamical degrees of freedom and therefore allows for more general motions than in Born's theory. Therefore, treating a relativistic body as a discrete system of particles could be a promising alternative to the standard approach based on Born's rigidity conditions.
format Preprint
id arxiv_https___arxiv_org_abs_2605_11411
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Dynamics of a relativistic discrete body: rigidity conditions, and covariant equations of motion
Deriglazov, Alexei A.
General Relativity and Quantum Cosmology
High Energy Physics - Theory
Mathematical Physics
Rigidity conditions for a body considered as a discrete system of relativistic particles are proposed. They by themselves do not yet determine an evolution of the system, and some second-order equations must be added to them. Poincaré-covariant equations of motion compatible with these rigidity conditions are proposed and discussed. The resulting theory has the expected six dynamical degrees of freedom and therefore allows for more general motions than in Born's theory. Therefore, treating a relativistic body as a discrete system of particles could be a promising alternative to the standard approach based on Born's rigidity conditions.
title Dynamics of a relativistic discrete body: rigidity conditions, and covariant equations of motion
topic General Relativity and Quantum Cosmology
High Energy Physics - Theory
Mathematical Physics
url https://arxiv.org/abs/2605.11411