Numerical study of fermion and boson models with infinite-range random interactions
Numerical study of fermion and boson models with infinite-range random interactions
We present numerical studies of fermion and boson models with random all-to-all interactions (the Sachdev-Ye-Kitaev models). The high-temperature expansion and exact diagonalization of the $N$-site fermion model are used to compute the entropy density: our results are consistent with the numerical solution of $N=\ensuremath{\infty}$ saddle-point equations, and the presence of …