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arXiv 2003.00723hep-th
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$κ$ -变形Dirac方程的量子化

Quantisation of $κ$-deformed Dirac equation

E. Harikumar, Vishnu Rajagopal

摘要:

本文研究了$κ$变形时空中Dirac场论的量子化。我们采用的量化方法,只使用运动方程的量化领域。从形变参数$a$中一阶有效的$κ$ -形变Dirac方程出发,导出形变场与其伴随场之间的形变不等时反对易关系,从而导出未形变振子代数.利用在$κ$ -变形旋量与其伴随之间施加变形不等时反对易关系的自由度,我们还导出了变形振子代数。我们证明了变形数算符是对应于整体相变对称性的守恒荷。我们构造了$κ$变形的守恒流,该守恒流在$a$中直到一阶都有效,对应于$κ$变形的Dirac方程的宇称和时间反演对称性.我们发现,这些保守的电流和电荷有一个质量依赖的校正,有效的一阶$a$。这一新特性有望在粒子物理学中具有实验意义。我们还表明,这是不可能的,以构建一个保守的电流与电荷共轭,表明狄拉克粒子和它的反粒子满足不同的方程在$κ$ -时空。

英文摘要:

In this paper, we study the quantisation of Dirac field theory in the $κ$-deformed space-time. We adopt a quantisation method that uses only equations of motion for quantising the field. Starting from $κ$-deformed Dirac equation, valid up to first order in the deformation parameter $a$, we derive deformed unequal time anti-commutation relation between deformed field and its adjoint, leading to undeformed oscillator algebra. Exploiting the freedom of imposing a deformed unequal time anti-commutation relations between $κ$-deformed spinor and its adjoint, we also derive a deformed oscillator algebra. We show that deformed number operator is the conserved charge corresponding to global phase transformation symmetry. We construct the $κ$-deformed conserved currents, valid up to first order in $a$, corresponding to parity and time-reversal symmetries of $κ$-deformed Dirac equation also. We show that these conserved currents and charges have a mass-dependent correction, valid up to first order in $a$. This novel feature is expected to have experimental significance in particle physics. We also show that it is not possible to construct a conserved current associated with charge conjugation, showing that the Dirac particle and its anti-particle satisfy different equations in $κ$-space-time.

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