The spectral function of Mott-insulating Hubbard ladders: From > > fractional excitations to coherent quasi-particles

by Feiguin Adrian (Northeastern University)

Monday 10 Dec 2018, 14:00 → 15:00 Europe/Rome

Aula Conversi (Dip. di Fisica - Edificio G. Marconi)

The spectral function of Mott-insulating Hubbard ladders: From fractional excitations to coherent quasi-particles Abstract = We study the spectral function of two-leg Mott insulating Hubbard ladders using the time-dependent density matrix renormalization group method (tDMRG), that allows us to resolve fine details with unprecedented resolution. The spectrum displays features of both spin-charge separation and coherent bound states. We identify the processes leading to quasiparticle formation by studying the time evolution of charge and spin degrees of freedom in real space.