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arXiv 1012.2069hep-thmath-phmath.MP
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复流形上的Dirac算子与超对称量子力学

Dirac Operator on Complex Manifolds and Supersymmetric Quantum Mechanics

E. A. Ivanov, A. V. Smilga

摘要:

本文研究了一个新的简单的N=2 SQM模型,它描述了外规范场中复流形上的运动。该模型的幂零超荷Q可以解释为一个(扭曲的)外全纯导数,使得该模型实现了扭曲的Dolbeault复形。和Q + \bar Q可以解释为狄拉克算子:如果流形是Kähler流形,则是标准狄拉克算子;对于一般复流形,则是某个“截断”狄拉克算子。针对Kähler情形,给出了两个数学事实的新的简单物理证明:(i)扭Dirac复形与扭Dolbeault复形的等价性和(ii)Atiyah-Singer定理.

英文摘要:

We explore a new simple N=2 SQM model describing the motion over complex manifolds in external gauge fields. The nilpotent supercharge Q of the model can be interpreted as a (twisted) exterior holomorphic derivative, such that the model realizes the twisted Dolbeault complex. The sum Q + \bar Q can be interpreted as the Dirac operator: the standard Dirac operator if the manifold is Kähler and a certain "truncated" Dirac operator for a generic complex manifold. Focusing on the Kähler case, we give new simple physical proofs of the two mathematical facts: (i) the equivalence of the twisted Dirac and twisted Dolbeault complexes and (ii) the Atiyah-Singer theorem.

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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