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arXiv 1106.6327hep-thgr-qchep-phmath-phmath.MP
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一般弯曲时空中自旋3/2场一致量子化的No-Go定理

A No-Go Theorem for the Consistent Quantization of Spin 3/2 Fields on General Curved Spacetimes

Thomas-Paul Hack, Mathias Makedonski

摘要:

众所周知,将自旋$\frac32$ -场耦合到引力或电磁背景会导致经典和量子理论中的潜在问题。到目前为止,已经提出了对这些问题的各种解决方案,这些解决方案都限于有限的一类背景。另一方面,一般引力背景的负面结果已经报道,只有有限的一组耦合到背景的日期。因此,据我们所知,全面分析所有可能的耦合到引力场和一般的引力背景,包括离壳层的还没有进行。本文分析了自旋$\frac32$ -场与引力场的耦合是否能使所得到的量子理论在任意引力背景下都是一致的。我们发现这是不可能的,因为所有的耦合都要求背景是爱因斯坦时空的一致性。这加强了普遍的信念,即超引力理论是唯一有意义的模型,其中包含自旋$\frac32$场,因为在这些模型中,这种引力背景的限制自然地表现为壳条件。

英文摘要:

It is well-known that coupling a spin $\frac32$-field to a gravitational or electromagnetic background leads to potential problems both in the classical and in the quantum theory. Various solutions to these problems have been proposed so far, which are all restricted to a limited class of backgrounds. On the other hand, negative results for general gravitational backgrounds have been reported only for a limited set of couplings to the background to date. Hence, to our knowledge, a comprehensive analysis of all possible couplings to the gravitational field and general gravitational backgrounds including off-shell ones has not been performed so far. In this work we analyse whether it is possible to couple a spin $\frac32$-field to a gravitational field in such a way that the resulting quantum theory is consistent on arbitrary gravitational backgrounds. We find that this is impossible as all couplings require the background to be an Einstein spacetime for consistency. This enforces the widespread belief that supergravity theories are the only meaningful models which contain spin $\frac32$ fields as in these models such restrictions of the gravitational background appear naturally as on-shell conditions.

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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