Sub-Ohmic spin-boson model with off-diagonal coupling : ground state properties
We have carried out analytical and numerical studies of the spin-boson model in the sub-ohmic regime with the influence of both the diagonal and the off-diagonal coupling accounted for, via the Davydov D1 variational ansatz. While a second-order phase transition is known to be exhibited by this mode...
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Main Authors: | Shenai, Prathamesh M., Lü, Zhiguo, Duan, Liwei, Li, Xin, Zhao, Yang |
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Other Authors: | School of Materials Science & Engineering |
Format: | Article |
Language: | English |
Published: |
2014
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Subjects: | |
Online Access: | https://hdl.handle.net/10356/101367 http://hdl.handle.net/10220/18408 |
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Institution: | Nanyang Technological University |
Language: | English |
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