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arXiv 1109.3944hep-thcond-mat.supr-congr-qc
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另一种超对称性

Supersymmetry of a different kind

Pedro D. Alvarez, Mauricio Valenzuela, Jorge Zanelli

摘要:

给出了一个包含引力、电磁场和Dirac自旋为1/2的场的(2+1)维系统的局域超对称作用量。该动作是一个OSp(2)连接的Chern-Simons形式|2)群体。所有的场都作为连接的一部分输入,它在规范组的伴随表示中变换。该系统在局域(规范)超对称下是离壳不变量。虽然超对称性是局部实现的,但没有自旋为3/2的引力子,因此不是超引力。这些场不一定形成质量相等的超对称二重态,而且费米子可以通过与背景几何的耦合获得质量,而玻色子--U(1)场和自旋连接--保持无质量。

英文摘要:

A local supersymmetric action for a (2+1)-dimensional system including gravity, the electromagnetic field and a Dirac spin-1/2 field is presented. The action is a Chern-Simons form for a connection of the OSp(2|2) group. All the fields enter as parts of the connection, that transforms in the adjoint representation of the gauge group. The system is off-shell invariant under local (gauge) supersymmetry. Although the supersymmetry is locally realized, there is no spin-3/2 gravitino, and is therefore not supergravity. The fields do not necessarily form supersymmetric doublets of equal mass, and moreover, the fermion may acquire mass through the coupling with the background geometry, while the bosons --the U(1) field and the spin connection-- remain massless.

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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