Quantum Christoffel Nonlinear Magnetization

Author(s): Xiao-Bin Qiang, Xiaoxiong Liu, Hai-Zhou Lu, and X. C. Xie The Christoffel symbol is an essential quantity in Einstein’s general theory of relativity. We discover that an electric field can induce a nonlinear magnetization in quantum materials, described by a Christoffel symbol defined in the Hilbert space of quantum states (quantum Christoffel symbol). Qui… [Phys. Rev. Lett. 136, 056302] Published Tue Feb 03, 2026