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quant-ph2025
Wave-packet dynamics in pseudo-Hermitian lattices: Coexistence of Hermitian and non-Hermitian wavefronts
Alon Beck, Moshe Goldstein
This paper investigates wave-packet dynamics in non-Hermitian lattice systems and reveals a surprising phenomenon: The simultaneous propagation of two distinct wavefronts, one trav…
quant-ph2025
Quantum geometry of non-Hermitian systems
Jan Behrends, Roni Ilan, Moshe Goldstein
The Berry curvature characterizes one aspect of the geometry of quantum states. It materializes, among other consequences, as an anomalous velocity of wave packets. In non-Hermitia…
quant-ph2024
Neural Network Ground State from the Neural Tangent Kernel Perspective: The Sign Bias
Harel Kol-Namer, Moshe Goldstein
Neural networks has recently attracted much interest as useful representations of quantum many body ground states, which might help address the infamous sign problem. Most attentio…