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arXiv 2407.14636quant-phhep-th
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将量子场论与量子力学粘合在一起:对Bell-CHSH不等式的一次考察

Gluing together Quantum Field Theory and Quantum Mechanics: a look at the Bell-CHSH inequality

M. S. Guimaraes, I. Roditi, S. P. Sorella

AI总结:

本文通过将标量量子场希尔伯特空间与二分量子系统希尔伯特空间相结合,利用Weyl算符和Jaynes-Cummings型相互作用,在微扰论二阶下研究了相对论标量场真空态中的Bell-CHSH不等式及其量子修正。

摘要:

通过利用希尔伯特空间 ${\cal H} \otimes {\cal H}_{AB}$,重新考察了相对论性标量量子场真空态中的Bell-CHSH不等式,其中 ${\cal H}$ 和 ${\cal H}_{AB}$ 分别表示标量场的希尔伯特空间和一个一般二分量子力学系统的希尔伯特空间。设计了依赖于场的厄米二值算符的构造以及Bell-CHSH不等式。在计算出不等式的 $AB$ 部分后,量子场的Bell-CHSH关联函数自然地从幺正Weyl算符中涌现出来。此外,引入一个Jaynes-Cummings型哈密顿量来描述标量场与一对量子比特之间的相互作用,在微扰论中计算到二阶,评估了标量场真空态中Bell-CHSH不等式的量子修正。

英文摘要:

The Bell-CHSH inequality in the vacuum state of a relativistic scalar quantum field is revisited by making use of the Hilbert space ${\cal H} \otimes {\cal H}_{AB}$, where ${\cal H}$ and ${\cal H}_{AB}$ stand, respectively, for the Hilbert space of the scalar field and of a generic bipartite quantum mechanical system. The construction of Hermitian, field-dependent, dichotomic operators is devised as well as the Bell-CHSH inequality. Working out the $AB$ part of the inequality, the resulting Bell-CHSH correlation function for the quantum field naturally emerges from unitary Weyl operators. Furthermore, introducing a Jaynes-Cummings type Hamiltonian accounting for the interaction between the scalar field and a pair of qubits, the quantum corrections to the Bell-CHSH inequality in the vacuum state of the scalar field are evaluated till the second order in perturbation theory.

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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