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https://hdl.handle.net/10356/97680
Title: | Communication : spin-boson model with diagonal and off-diagonal coupling to two independent baths : ground-state phase transition in the deep sub-Ohmic regime | Authors: | Yao, Yao Chernyak, Vladimir Zhao, Yang Zhao, Yang |
Keywords: | DRNTU::Science::Physics | Issue Date: | 2014 | Source: | Zhao, Y., Yao, Y., Chernyak, V., & Zhao, Y. (2014). Communication: Spin-boson model with diagonal and off-diagonal coupling to two independent baths: Ground-state phase transition in the deep sub-Ohmic regime. The Journal of Chemical Physics, 140(16), 161105-. | Series/Report no.: | The journal of chemical physics | Abstract: | 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 transition between two types of doubly degenerate states, which is reduced to one of the usual types for nonzero tunneling. In addition, it is found that expectation values of the spin components display jumps at the phase boundary in the absence of bias and tunneling. | URI: | https://hdl.handle.net/10356/97680 http://hdl.handle.net/10220/19601 |
ISSN: | 0021-9606 | DOI: | 10.1063/1.4873351 | Schools: | School of Materials Science & Engineering | Rights: | © 2014 AIP Publishing LLC. This paper was published in The Journal of Chemical Physics and is made available as an electronic reprint (preprint) with permission of AIP Publishing LLC. The paper can be found at the following official DOI: http://dx.doi.org/10.1063/1.4873351. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. | Fulltext Permission: | open | Fulltext Availability: | With Fulltext |
Appears in Collections: | MSE Journal Articles |
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