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arXiv · 1704.02113

Symmetric configurations highlighted by collective quantum coherence

Dennis Obster·Naoki Sasakura
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Abstract

Recent developments in quantum gravity have shown the Lorentzian treatment to be a fruitful approach towards the emergence of macroscopic spacetimes. In this paper, we discuss another related aspect of the Lorentzian treatment: we argue that collective quantum coherence may provide a simple mechanism for highlighting symmetric configurations over generic non-symmetric ones. After presenting the general framework of the mechanism, we show the phenomenon in some concrete simple examples in the randomly connected tensor network, which is tightly related to a certain model of quantum gravity, i.e., the canonical tensor model. We find large peaks at configurations invariant under Lie-group symmetries as well as a preference for charge quantization, even in the Abelian case. In future study, this simple mechanism may provide a way to analyze the emergence of macroscopic spacetimes with global symmetries as well as various other symmetries existing in nature, which are usually postulated.

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Dennis Obster, Naoki Sasakura. 2017-11-03. Symmetric configurations highlighted by collective quantum coherence. https://doi.org/10.1140/epjc%2Fs10052-017-5355-y

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