Exact Excitation Spectra and Spectral Gaps of the Frustrated Spin-1/2 J 1 - J 2 Model via Dual Spin-Sector Variational Quantum Eigensolvers

arXiv:2610.10454 · cond-mat.str-el · Submitted 2026-10-07 · Read on arXiv

cond-mat.str-el

Submitted: 2026-10-07

Updated: 2026-10-07

Terminology

Excited Singlet — 19× in this paper
Benchmark — 13× in this paper · explained in 2 episodes
Fidelity — 12× in this paper · explained in 2 episodes
Spectral Gap — 9× in this paper · explained in 5 episodes
Variational Quantum Eigensolver — 8× in this paper
Degeneracy — 6× in this paper · explained in 3 episodes
Exact Diagonalization — 3× in this paper
Phase Transitions — 3× in this paper · explained in 2 episodes
Quantum Circuits — 3× in this paper · explained in 2 episodes
Accuracy — 2× in this paper · explained in 1 episode
Post-Selection — 2× in this paper · explained in 2 episodes
Variational Quantum Eigensolver (VQE) — 2× in this paper · explained in 5 episodes
Zero-Noise Extrapolation — 2× in this paper
Adam — 1× in this paper · explained in 2 episodes
Entanglement — 1× in this paper · explained in 3 episodes
Hamiltonian Variational Ansatz — 1× in this paper
Hilbert Space — 1× in this paper · explained in 2 episodes
Quantum Phase Estimation (QPE) — 1× in this paper · explained in 3 episodes
Variational Quantum Deflation — 1× in this paper