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arXiv 1710.02130hep-th
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含自旋变量的形变超对称量子力学

Deformed supersymmetric quantum mechanics with spin variables

Sergey Fedoruk, Evgeny Ivanov, Stepan Sidorov

摘要:

我们对${\rm SU}(2|1)$超对称多粒子力学的单粒子模型进行了改进,增加了半动力学自旋自由度。我们发现相关的能谱和全套的物理状态的质量-尺寸变形参数$m$和${\rm SU}(2)$自旋$q \in \big( \mathbb{Z}_{>0}\,$,$1/2 + \mathbb{Z}_{\geqslant 0}\big)\,$的函数。发现在固定能级上的态构成了超群${\rm SU}(2|1)\,$的不可约多重态。同时,在经典和量子情形下,揭示了模型的超共形对称性${\rm OSp}(4|2)$。我们计算了${\rm OSp}(4|2)$ Casimir算符,证明了在固定的$q$上属于不同能级的全部物理态被统一为一个不可约的${\rm OSp}(4|2)$多重态.

英文摘要:

We quantize the one-particle model of the ${\rm SU}(2|1)$ supersymmetric multi-particle mechanics with the additional semi-dynamical spin degrees of freedom. We find the relevant energy spectrum and the full set of physical states as functions of the mass-dimension deformation parameter $m$ and ${\rm SU}(2)$ spin $q \in \big( \mathbb{Z}_{>0}\,$, $1/2 + \mathbb{Z}_{\geqslant 0}\big)\,$. It is found that the states at the fixed energy level form irreducible multiplets of the supergroup ${\rm SU}(2|1)\,$. Also, the hidden superconformal symmetry ${\rm OSp}(4|2)$ of the model is revealed in the classical and quantum cases. We calculate the ${\rm OSp}(4|2)$ Casimir operators and demonstrate that the full set of the physical states belonging to different energy levels at fixed $q$ are unified into an irreducible ${\rm OSp}(4|2)$ multiplet.

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