2 papers
cond-mat.mtrl-sci2026
Nonadiabatic Wave-Packet Dynamics: Nonadiabatic Metric, Quantum Geometry, and Gravitational Analogy
Yafei Ren, M. E. Sanchez Barrero
We develop a unified theory for the nonadiabatic wave-packet dynamics of Bloch electrons subject to slowly varying spatial and temporal perturbations. Extending the conventional wa…
cond-mat.mtrl-sci2026
Nonadiabatic Origin of Quantum-Metric Effects via Momentum-Space Metric Tensor
Yafei Ren
We reveal a fundamental geometric structure of momentum space arising from the nonadiabatic evolution of Bloch electrons. By extending semiclassical wave packet theory to incorpora…