Develops a validation framework for quantum spin dynamics simulations anchored by neutron scattering and classical methods, using observable maps, uncertainty propagation, robustness tests, and actuator-aware feedback.
Magnetic order, magnons, and crystal fields in van der Waals CeSiI
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abstract
We report neutron, X-ray absorption, and resonant X-ray spectroscopy of magnetic excitations in the new heavy-fermion van-der-Waals superconductor CeSiI. We determined effective Hamiltonians and ground states of crystal electric fields and magnons. Isotropic Heisenberg interactions on a quasi two dimensional lattice, including ferromagnetic nearest-neighbor exchange as the dominant interaction, provide an excellent account to the low-energy measured dynamics and stabilize a co-rotating spin cycloid. Our study provides the basis to model CeSiI from first principles, thereby laying the ground for microscopic understanding of heavy-fermion physics, their unconventional superconductivity, and quantum criticality.
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quant-ph 1years
2026 1verdicts
UNVERDICTED 1representative citing papers
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A Validation Framework for Quantum Simulation of Spin Dynamics against Inelastic Neutron Scattering and Classical Simulation
Develops a validation framework for quantum spin dynamics simulations anchored by neutron scattering and classical methods, using observable maps, uncertainty propagation, robustness tests, and actuator-aware feedback.