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arXiv 0712.3872hep-th
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具有类Thirring相互作用的二维规范模型的限制

Restrictions over two-dimensional gauge models with Thirring-like interaction

D. Dalmazi, A. de Souza Dutra

摘要:

几年前,有人指出费米子自相互作用项的Thirring型如何影响无质量二维规范理论的通常结构[1]。该工作只考虑了纯矢量和纯手征规范耦合的情况,相应的Thirring项也分别是纯矢量和纯手征的,这样矢量(或手征)Schwinger模型就不会因为四次相互作用项的加入而失去手征结构。在这里,我们扩展到一个广义矢量和轴向耦合的规范相互作用和四次费米子相互作用的分析。这个想法是在不失去规范耦合的原始结构的情况下进行量子化。为了做到这一点,我们利用了类瑟林相互作用定义中的任意性。

英文摘要:

Some years ago, it was shown how fermion self-interacting terms of the Thirring-type impact the usual structure of massless two-dimensional gauge theories [1]. In that work only the cases of pure vector and pure chiral gauge couplings have been considered and the corresponding Thirring term was also pure vector and pure chiral respectively, such that the vector (or chiral) Schwinger model should not lose its chirality structure due to the addition of the quartic interaction term. Here we extend this analysis to a generalized vector and axial coupling both for the gauge interaction and the quartic fermionic interactions. The idea is to perform quantization without losing the original structure of the gauge coupling. In order to do that we make use of an arbitrariness in the definition of the Thirring-like interaction.

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