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arXiv 2108.08208hep-th
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$U(1)$规范理论中的电路复杂性

Circuit Complexity in $U(1)$ Gauge Theory

Amir Moghimnejad, Shahrokh Parvizi

摘要:

本文研究了库仑规范和高斯态下$U(1)$规范理论自由矢量场的电路复杂性。我们引入了一个具有高斯态的量子线路模型,包括参考态和目标态。使用Nielsen的几何方法,复杂度可以被发现为状态空间中的最短测地线。这种测地线是基于Bogoliubov变换的李群上的测地线距离的概念配备了一个右不变的度量。我们使用协方差矩阵的框架来计算高斯状态之间的电路复杂度。我们应用这个框架的自由向量场在一般的维度,我们计算电路的复杂性的基态的哈密顿量。

英文摘要:

We study circuit complexity for a free vector field of a $U(1)$ gauge theory in Coulomb gauge, and Gaussian states. We introduce a quantum circuit model with Gaussian states, including reference and target states. Using the Nielsen's geometric approach, the complexity then can be found as the shortest geodesic in the space of states. This geodesic is based on the notion of geodesic distance on the Lie group of Bogoliubov transformations equipped with a right-invariant metric. We use the framework of the covariance matrix to compute circuit complexity between Gaussian states. We apply this framework to the free vector field in general dimensions where we compute the circuit complexity of the ground state of the Hamiltonian.

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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