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arXiv 2103.06920hep-thquant-ph
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一般维数下共形场论的复杂性

Complexity for Conformal Field Theories in General Dimensions

Nicolas Chagnet, Shira Chapman, Jan de Boer, Claire Zukowski

摘要:

我们研究了任意维共形场论态的电路复杂性。我们的电路从一个初级状态开始,沿着洛伦兹共形群的幺正表示移动。距离函数的不同选择可以根据共形群的共伴轨道的几何来理解。我们明确地将我们的电路与反德西特空间中的类时测地线和这些测地线之间的距离的复杂性度量。我们将我们的方法扩展到电路在其他对称群使用群论的概念的相干态的概括。

英文摘要:

We study circuit complexity for conformal field theory states in arbitrary dimensions. Our circuits start from a primary state and move along a unitary representation of the Lorentzian conformal group. Different choices of distance functions can be understood in terms of the geometry of coadjoint orbits of the conformal group. We explicitly relate our circuits to timelike geodesics in anti-de Sitter space and the complexity metric to distances between these geodesics. We extend our method to circuits in other symmetry groups using a group theoretic generalization of the notion of coherent states.

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