Combining dynamical quantum typicality and numerical linked cluster expansions
Combining dynamical quantum typicality and numerical linked cluster expansions
We demonstrate that numerical linked cluster expansions (NLCE) yield a powerful approach to calculate time-dependent correlation functions for quantum many-body systems in one dimension. As a paradigmatic example, we study the dynamics of the spin current in the spin-1/2 XXZ chain for different values of anisotropy, as well as in …