Fidelity decay of the two-level bosonic embedded ensembles of random matrices
Fidelity decay of the two-level bosonic embedded ensembles of random matrices
We study the fidelity decay of the $k$-body embedded ensembles of random matrices for bosons distributed over two single-particle states. Fidelity is defined in terms of a reference Hamiltonian, which is a purely diagonal matrix consisting of a fixed one-body term and includes the diagonal of the perturbing $k$-body embedded …