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arXiv 2104.05027quant-phgr-qchep-th
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量子复杂性第二定律与纠缠虫洞

The Second Law of Quantum Complexity and the Entanglement Wormhole

Andrea Russo

摘要:

这篇文章最初是剑桥大学的第三部分论文。量子复杂性作为两个量子态之间的Fubini度量的替代度量而出现。给定两个状态和一组允许的门,它被定义为能够将一个状态转换为另一个状态的最简单的酉算子。从K个量子比特通过k-局域哈密顿量演化开始,可以在量子系统和辅助经典系统之间进行类比。使用复杂性的定义来定义经典系统的度量,可以将其熵与K个量子比特的量子复杂性联系起来,定义量子复杂性第二定律。该定律指出,如果它还没有饱和,系统的量子复杂性将以压倒性的概率向其最大值增加。在AdS/CFT对偶和ER=EPR猜想的背景下,爱因斯坦罗森桥内部体积的增长与共形场论瞬时态的量子复杂性成正比。因此,连接两个纠缠CFT的虫洞内部将作为边界状态复杂化的自然结果而增长。

英文摘要:

This work is originally a Cambridge Part III essay paper. Quantum complexity arises as an alternative measure to the Fubini metric between two quantum states. Given two states and a set of allowed gates, it is defined as the least complex unitary operator capable of transforming one state into the other. Starting with K qubits evolving through a k-local Hamiltonian, it is possible to draw an analogy between the quantum system and an auxiliary classical system. Using the definition of complexity to define a metric for the classical system, it is possible to relate its entropy with the quantum complexity of the K qubits, defining the Second Law of Quantum Complexity. The law states that, if it is not already saturated, the quantum complexity of a system will increase with an overwhelming probability towards its maximum value. In the context of AdS/CFT duality and the ER=EPR conjecture, the growth of the volume of the Einstein Rosen bridge interior is proportional to the quantum complexity of the instantaneous state of the conformal field theory. Therefore, the interior of the wormhole connecting two entangled CFT will grow as a natural consequence of the complexification of the boundary state.

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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