We investigate the nonequilibrium dynamics of complex Sachdev-Ye-Kitaev (SYK) models in $q\ensuremath{\rightarrow}\ensuremath{\infty}$ limit, where $q/2$ denotes order random Dirac fermion interaction. extend previous results by Eberlein et al. [Phys. Rev. B 96, 205123 (2017)] to show that a single SYK Hamiltonian for $t\ensuremath{\ge}0$ is perfect thermalizer sense local Green's function inst...

We investigate in a simple model whether a Jastrow-based approach for a many-body system containing two-body interactions can be exact. By comparison with recent assertions to the contrary, we find that in general the exact wave function is not purely two-body correlated. Nonetheless, we show that the energy estimate obtained from the calculations is as accurate as it can possibly be, suggestin...