Preprint
Aug 2026
Efficient Hamiltonian Truncation: Fast Matrix Construction and Quantum Krylov Diagonalization
Hamiltonian truncation offers a nonperturbative route to quantum field theory, yet its accuracy is limited by the rapid expansion of the truncated Hilbert space, which drives up computational cost. We tackle this bottleneck with a hybrid strategy that pairs classical and quantum algorithms: 1) we develop an efficient b...
R. Houtz, M. Knipfer, K. Matchev et al.
· 1 citation