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arXiv 2304.05596hep-thgr-qc
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规范与时间重参数化不变的半自旋场

Gauge and time-reparametrization invariant spin-half fields

Mauricio Valenzuela

AI总结:

本文提出一个具有反对易参数位移对称性的费米子模型,结合第一类和第二类约束,通过协变固定规范导出 Dirac 方程,模型具有时间重参数化不变性且哈密顿量消失,并发现其与无质量 Rarita-Schwinger 系统零模对应,可能描述超引力基态。

摘要:

我们提出了一个以反对易参数位移对称性为特征的费米子模型。其哈密顿形式结合了第一类和第二类约束。我们以协变方式固定规范,导出了著名的 Dirac 方程,使场能够相应地传播。值得注意的是,该模型本身具有时间重参数化下的不变性。因此,哈密顿量消失,使其有别于 Dirac 理论的传统框架。此外,我们建立了这些粒子与无质量 Rarita-Schwinger 系统零模之间的对应关系,提出了它们可能描述超引力基态的有趣含义。

英文摘要:

We present a fermion model characterized by an anticommuting-parameter shift symmetry. The Hamiltonian formulation exhibits a combination of first-class and second-class constraints. We derive the well-known Dirac equation by fixing the gauge in a covariant manner, enabling the fields to propagate accordingly. Notably, the model inherently possesses invariance under reparametrizations of time. Consequently, the Hamiltonian vanishes, setting it apart from the conventional framework of Dirac's theory. Furthermore, we establish a correspondence between these particles and the zero-modes of the massless Rarita-Schwinger system, bringing forth the intriguing implication that they may describe a supergravity ground state.

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。

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