Please use this identifier to cite or link to this item: 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
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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