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arXiv 1609.04028gr-qchep-th
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耦合到标准模型的共形圈量子引力

Conformal loop quantum gravity coupled to the Standard Model

Miguel Campiglia, Rodolfo Gambini, Jorge Pullin

摘要:

我们认为,广义相对论的共形不变扩展耦合到标准模型是需要量子化的基本理论。我们证明了它可以用圈量子引力方法来处理。通过规范固定和修改的希格斯机制,粒子获得质量,并恢复广义相对论耦合到标准模型。该理论对圈量子引力中的哈密顿约束的定义、量子时空中的半经典极限和量子场论中的有限重整化问题提出了新的见解。它还给出了消除量子时空中量子场论在计算反反应时产生的歧义的提示。

英文摘要:

We argue that a conformally invariant extension of general relativity coupled to the Standard Model is the fundamental theory that needs to be quantized. We show that it can be treated by loop quantum gravity techniques. Through a gauge fixing and a modified Higgs mechanism particles acquire mass and one recovers general relativity coupled to the Standard Model. The theory suggests new views with respect to the definition of the Hamiltonian constraint in loop quantum gravity, the semi-classical limit and the issue of finite renormalization in quantum field theory in quantum space-time. It also gives hints about the elimination of ambiguities that arise in quantum field theory in quantum space-time in the calculation of back-reaction.

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