arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2203.07099hep-th
收藏

多值Hamilton算子的动力学降维

Dynamical dimensional reduction in multi-valued Hamiltonians

Alexsandre L. Ferreira Junior, Nelson Pinto-Neto, Jorge Zanelli

摘要:

几个有趣的物理系统,如广义相对论在高维中的洛夫洛克扩展、经典时间晶体、k-本质场、Horndeski理论、可压缩流体和非线性电动力学,由于它们的哈密顿量是动量的多值函数,因此具有明显的不明确的辛结构。在本文中,动力学演化所产生的这种哈密顿被描述为一个退化的动力系统,其辛形式没有一个恒定的秩,允许新的功能和解释不存在于以前的调查。特别是,它示出了多值性是如何与降维的动力学机制,作为一些自由度变成规范对称性时,系统退化。

英文摘要:

Several interesting physical systems, such as the Lovelock extension of General Relativity in higher dimensions, classical time crystals, k-essence fields, Horndeski theories, compressible fluids, and nonlinear electrodynamics, have apparent ill defined sympletic structures, due to the fact that their Hamiltonians are multi-valued functions of the momenta. In this paper, the dynamical evolution generated by such Hamiltonians is described as a degenerate dynamical system, whose sympletic form does not have a constant rank, allowing novel features and interpretations not present in previous investigations. In particular, it is shown how the multi-valuedness is associated with a dynamical mechanism of dimensional reduction, as some degrees of freedom turn into gauge symmetries when the system degenerates.

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。

↑