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math.NA2026
Accurate Density of States Estimation: A Comparative Study
Dong Min Roh, Chao Yang
We study density of states (DOS) estimation for large sparse real symmetric matrices by fitting the cumulative density of states (CDOS) and differentiating the fit. We use a stocha…
physics.comp-ph2026
Lanczos Method for QRPA Strength Functions in Atomic Nuclei
Dong Min Roh, Chao Yang, Jonathan Engel +1
We present a symmetric Lanczos method for computing charge-changing QRPA strength functions in atomic nuclei. Starting from the finite-amplitude-method formulation of the QRPA line…
quant-ph2026
Quantum-classical framework for many-fermion response and structure
Weijie Du, Yangguang Yang, Zixin Liu +2
Response functions are key observables for probing the structure and dynamics of many-body systems. We introduce and demonstrate a quantum-classical framework for computing respons…