Ward identities and orbital magnetization in current density functional theory
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论文直接讨论相互作用电子体系中的轨道磁化及其 Ward 恒等式，为轨道响应和相互作用修正的形式理论提供了核心参考。
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Author(s): Giovanni Vignale, Junren Shi, Di Xiao, and Qian Niu If you think that the band theory of orbital magnetization is a closed chapter of condensed matter physics, think again. The original theory was developed for noninteracting electrons. But what if interactions are included? Current density functional theory offers a simple and formally exact way to include interactions. But the reason why this works is more subtle than the authors initially thought. [Phys. Rev. B 114, 115113] Published Mon Aug 17, 2026