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arXiv 1003.3802hep-thgr-qc
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从量子引力的构造导出Dirac哈密顿量

On a Derivation of the Dirac Hamiltonian From a Construction of Quantum Gravity

Johannes Aastrup, Jesper M. Grimstrup, Mario Paschke

摘要:

在3+1维的狄拉克哈密顿的结构显示出现在一个半经典近似从一个抽象的频谱三重建设。该谱三元组是在完整环代数上构造的,对应于连接的配置空间,并编码广义相对论的运动学信息。狄拉克哈密顿量的出现是由于观察到回路的代数依赖于基点的选择。消除这种依赖性需要旋量场,在半经典近似下,需要狄拉克哈密顿量的结构。

英文摘要:

The structure of the Dirac Hamiltonian in 3+1 dimensions is shown to emerge in a semi-classical approximation from a abstract spectral triple construction. The spectral triple is constructed over an algebra of holonomy loops, corresponding to a configuration space of connections, and encodes information of the kinematics of General Relativity. The emergence of the Dirac Hamiltonian follows from the observation that the algebra of loops comes with a dependency on a choice of base-point. The elimination of this dependency entails spinor fields and, in the semi-classical approximation, the structure of the Dirac Hamiltonian.

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