Symmetry and the critical phase of the two-bath spin-boson model : ground-state properties

• Main Authors: Zhou, Nengji, Chen, Lipeng, Xu, Dazhi, Chernyak, Vladimir, Zhao, Yang
• Other Authors: School of Materials Science & Engineering
• Format: Article
• Language: English
• Published: 2015
• Subjects: DRNTU::Science::Physics
• Online Access: https://hdl.handle.net/10356/96864; http://hdl.handle.net/10220/25570; http://journals.aps.org.ezlibproxy1.ntu.edu.sg/prb/accepted/94071O05O9d11421a6693901ecb500c2bd8dbdb4d
• Institution: Nanyang Technological University

A generalized trial wave function termed as the "multi-D1 ansatz'' has been developed to study the ground state of the spin-boson model with simultaneous diagonal and off-diagonal coupling in the sub-Ohmic regime. Ground state properties including the energy and the spin polarization...