Communication : spin-boson model with diagonal and off-diagonal coupling to two independent baths : ground-state phase transition in the deep sub-Ohmic regime
We investigate a spin-boson model with two boson baths that are coupled to two perpendicular components of the spin by employing the density matrix renormalization group method with an optimized boson basis. It is revealed that in the deep sub-Ohmic regime there exists a novel second-order phase tra...
Main Authors: | Yao, Yao, Chernyak, Vladimir, Zhao, Yang |
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Other Authors: | School of Materials Science & Engineering |
Format: | Journal Article |
Language: | English |
Published: |
2014
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Subjects: | |
Online Access: | https://hdl.handle.net/10356/97680 http://hdl.handle.net/10220/19601 |
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