Ken Inayoshi
YOU?
Author Swipe
A causality-based divide-and-conquer algorithm for nonequilibrium Green's function calculations with quantics tensor trains Open
We propose a causality-based divide-and-conquer algorithm for nonequilibrium Green's function calculations with quantics tensor trains. This algorithm enables stable and efficient extensions of the simulated time domain by exploiting the c…
Memory-Efficient Nonequilibrium Green's Function Framework Built On Quantics Tensor Trains Open
One of the challenges in diagrammatic simulations of nonequilibrium phenomena in lattice models is the large memory demand for storing momentum-dependent two-time correlation functions. This problem can be overcome with the recently introd…
Energy flow during relaxation in an electron-phonon system with multiple modes: A nonequilibrium Green's function study Open
We investigate an energy flow in an extended Holstein model describing electron systems coupled to hot-phonons and heat-bath phonons. To analyze the relaxation process after the photo-excitation of electrons, we employ the nonequilibrium d…
Photoinduced dynamics of a quasicrystalline excitonic insulator Open
We study the photo-induced dynamics of the excitonic insulator in the two-band Hubbard model on the Penrose tiling by means of the time-dependent real-space mean-field approximation. We show that, with a single-cycle electric-field pulse, …
Photoinduced Phase Transition in Two-Band model on Penrose Tiling Open
We study the effects of the photo irradiation on the band insulating state in the two-band Hubbard model on the Penrose tiling. Examining the time- and site-dependent physical quantities, we find that the excitionic state is dynamically in…