Variational dynamics of the sub-Ohmic spin-boson model on the basis of multiple Davydov ${\mathrm{D}}_1$ states

Lu Wang, Lipeng Chen, Nengji Zhou +1

Dynamics of the sub-Ohmic spin-boson model is investigated by employing a multitude of the Davydov D${}_1$ trial states, also known as the multi-D${}_1$ Ansatz. Accuracy in dynamics si…