Introduces three rules and gauge filtration to make position-operator evaluations in Bloch basis independent of unit cell and gauge choices while preserving Hermitian properties and recovering correct intraband velocity, thereby reconciling wave-packet self-rotation with Wannier local circulation.
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Many-body collective fluctuations generate a dynamical Berry curvature that is invisible to optics but isolable in antisymmetric RIXS channels of P-T-symmetric systems.
Extending the wave-packet ansatz for Bloch electrons to include interband contributions and applying the time-dependent variational principle yields leading-order nonadiabatic corrections to the Lagrangian, including an energy-gap-renormalized quantum metric that recasts dynamics as geodesic motion.
citing papers explorer
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Consistent Evaluation of Operators Involving the Position Operator in the Bloch Representation: Application to the Orbital Moment
Introduces three rules and gauge filtration to make position-operator evaluations in Bloch basis independent of unit cell and gauge choices while preserving Hermitian properties and recovering correct intraband velocity, thereby reconciling wave-packet self-rotation with Wannier local circulation.
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Geometric curvature driven by many-body collective fluctuations
Many-body collective fluctuations generate a dynamical Berry curvature that is invisible to optics but isolable in antisymmetric RIXS channels of P-T-symmetric systems.
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Nonadiabatic Wave-Packet Dynamics: Nonadiabatic Metric, Quantum Geometry, and Gravitational Analogy
Extending the wave-packet ansatz for Bloch electrons to include interband contributions and applying the time-dependent variational principle yields leading-order nonadiabatic corrections to the Lagrangian, including an energy-gap-renormalized quantum metric that recasts dynamics as geodesic motion.