Variational dynamics of the sub-Ohmic spin-boson model on the basis of multiple Davydov D1 states

• Main Authors: Wang, Lu, Chen, Lipeng, Zhou, Nengji, Zhao, Yang
• Other Authors: School of Materials Science & Engineering
• Format: Article
• Language: English
• Published: 2016
• Subjects: Phase diagrams
• Online Access: https://hdl.handle.net/10356/82385; http://hdl.handle.net/10220/39947
• Institution: Nanyang Technological University

Dynamics of the sub-Ohmic spin-boson model is investigated by employing a multitude of the Davydov D1 trial states, also known as the multi-D1Ansatz. Accuracy in dynamics simulations is improved significantly over the single D1Ansatz, especially in the weak system-bath coupling regime. The reliabili...