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arXiv 1010.0963hep-th
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质量维为1的费米子场的超对称拉格朗日量

A Supersymmetric Lagrangian for Fermionic Fields with Mass Dimension One

Kai E. Wunderle, Rainer Dick

摘要:

本文基于一个具有一个自由旋量指数的一般超场,导出了具有整数质量维的费米子场的超对称模型。首先,我们证明,这是不可能制定这样一个模型的基础上,一般的标量超场。这是由于问题建设一个拉格朗日包含一个动力学项的费米子质量维度一场,以及问题得出一致的第二次量化。然后,我们开发了一个形式主义的基础上,一个自由旋量指数的一般超场。我们系统地推导了所有相关的手征和反手征超场的三阶协变导数。使用这种形式主义,我们能够构建一个超对称的壳拉格朗日,包含一个动力学项的费米子场与质量维1。然后,我们推导出相应的壳层上的超电流,并成功地制定了一致的第二次量子化的分量字段。最后,我们给出了超对称哈密顿量的结果。由于拉格朗日量是超对称的,而哈密顿量是用超对称代数从拉格朗日量导出的,所以哈密顿量必须是正定的。

英文摘要:

We present the derivation of a supersymmetric model for fermionic fields with integer valued mass dimension based on a general superfield with one free spinor index. First, we demonstrate that it is impossible to formulate such a model based on a general scalar superfield. This is due to problems constructing a Lagrangian containing a kinetic term for the fermionic mass dimension one field, as well as problems deriving a consistent second quantisation. We then develop a formalism based on a general superfield with one free spinor index. We systematically derive all associated chiral and anti-chiral superfields up to third order in covariant derivatives. Using this formalism we are able to construct a supersymmetric on-shell Lagrangian that contains a kinetic term for the fermionic fields with mass dimension one. We then derive the corresponding on-shell supercurrent and succeed to formulate a consistent second quantisation for the component fields. Finally, we present our result for a supersymmetric Hamiltonian. As the Lagrangian is by construction supersymmetric and the Hamiltonian was derived from the Lagrangian using the supersymmetry algebra the Hamiltonian must be positive definite.

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