arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1902.08997gr-qchep-lat
收藏

离散协变力学的Noether定理

A Noether Theorem for discrete Covariant Mechanics

Fabio D'Ambrosio

摘要:

诺特定理是经典力学的一个优雅而有力的工具,但它在离散理论中几乎没有影响。在这里,我们定义和探索一个离散的方法协变力学,并表明在这个框架内的离散版本的诺特定理,完全类似于著名的连续版本,其所有的分支,仍然有效。我们还讨论了为什么更传统的方法离散力学违反某些守恒定律的建设。

英文摘要:

Noether's theorem is an elegant and powerful tool of classical mechanics, but it is of little to no consequence in discrete theories. Here we define and explore a discrete approach to covariant mechanics and show that within this framework a discrete version of Noether's theorem, completely analogous to the well-known continuum version with all its ramifications, remains valid. We also discuss why more traditional approaches to discretized mechanics violate certain conservation laws by construction.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑