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arXiv 2404.04765physics.chem-phcond-mat.mtrl-sciphysics.comp-phquant-ph
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光子多体色散:一种用于强耦合光子-物质系统的交换-关联泛函

Photon Many-body Dispersion: an Exchange-correlation Functional for Strongly Coupled Light-matter Systems

City College of New York(纽约城市学院);The Graduate Center, City University of New York(纽约市立大学研究生中心);Flatiron Institute(平顿研究所)

Cankut Tasci, Leonardo A. Cunha, Johannes Flick

AI总结:

本文提出了一种用于强耦合光子-物质系统的交换-关联泛函pMBD,能够准确描述强相互作用中的各向异性效应和范德瓦耳斯相互作用,并高效模拟复杂系统。

摘要:

我们引入了一种电子-光子交换-关联泛函,用于量子电动力学密度泛函理论(QEDFT)。该方法,即光子多体色散(pMBD),受弱分子间相互作用的多体色散(MBD)方法启发,将其推广以同时包含电子和光子(电磁)自由度。我们证明pMBD能够准确捕捉强光子-物质相互作用背景下出现的效应,如各向异性电子-光子相互作用、超越单光子效应以及腔调制的范德瓦耳斯相互作用。此外,我们还展示pMBD在计算上高效,并允许模拟与光学腔耦合的大型复杂系统。

英文摘要:

We introduce an electron-photon exchange-correlation functional for quantum electrodynamical density-functional theory (QEDFT). The approach, photon MBD (pMBD), is inspired by the many-body dispersion (MBD) method for weak intermolecular interactions, which is generalized to include both electronic and photonic (electromagnetic) degrees of freedom on the same footing. We demonstrate that pMBD accurately captures effects that arise in the context of strong light-matter interactions, such as anisotropic electron-photon interactions, beyond single-photon effects, and cavity modulated van der Waals interactions. Moreover, we show that pMBD is computationally efficient and allows simulations of large complex systems coupled to optical cavities.

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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