6 papers
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…
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…
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…
Ab initio many-fermion structure calculations on a quantum computer
Weijie Du, Yangguang Yang, Zixin Liu +2
To overcome the limitations of existing algorithms for solving self-bound quantum many-body problems -- such as those encountered in nuclear and particle physics -- that access onl…
Accelerating Eigenvalue Computation for Nuclear Structure Calculations via Perturbative Corrections
Dong Min Roh, Esmond Ng, Chao Yang +3
We present a new method for computing the lowest few eigenvalues and the corresponding eigenvectors of a nuclear many-body Hamiltonian represented in a truncated configuration inte…
An Efficient Quantum Circuit for Block Encoding a Pairing Hamiltonian
Diyi Liu, Weijie Du, Lin Lin +2
We present an efficient quantum circuit for block encoding pairing Hamiltonian often studied in nuclear physics. Our block encoding scheme does not require mapping the creation and…