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arXiv 1205.1685hep-th
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非对称张量Fierz-Pauli质量项的非唯一性

Nonuniqueness of the Fierz-Pauli mass term for a nonsymmetic tensor

D. Dalmazi

摘要:

从用不含完全反对称部分的混合对称张量$\tmnd $($T_{[[μν]ρ]}=0$)描述D=4中自旋为2的大质量粒子出发,得到了用非对称张量$e_{μν}$描述的对偶模型.该模型为二阶导数模型,其质量项$(e_{μν}e^{νμ} + c \, e^2)$含有任意实参数$c$ .值得注意的是,对于任何$c$的实值,它都没有鬼,并且描述了一个大质量的自旋2粒子,正如从二元性所预期的那样。反对称部分$e_{[μν]}$起辅助场的作用,在壳上消失。在无质量的情况下,模型描述了一个无质量的自旋为2的粒子,没有鬼。

英文摘要:

Starting with a description of massive spin-2 particles in D=4 in terms of a mixed symmetry tensor $\tmnd $ without totally antisymmetric part ($T_{[[μν]ρ]}=0$) we obtain a dual model in terms of a nonsymmetric tensor $e_{μν}$. The model is of second-order in derivatives and its mass term $(e_{μν}e^{νμ} + c \, e^2)$ contains an arbitrary real parameter $c$. Remarkably, it is free of ghosts for any real value of $c$ and describes a massive spin-2 particle as expected from duality. The antisymmetric part $e_{[μν]}$ plays the role of auxiliary fields, vanishing on shell. In the massless case the model describes a massless spin-2 particle without ghosts.

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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