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  1. Article ; Online: Lee-Yang zeros and quantum Fisher information matrix in a nonlinear system.

    Tao, Hong / Su, Yuguo / Zhang, Xingyu / Liu, Jing / Wang, Xiaoguang

    Physical review. E

    2023  Volume 108, Issue 2-1, Page(s) 24104

    Abstract: The distribution of Lee-Yang zeros not only matters in thermodynamics and quantum mechanics, but also in mathematics. Hereby we propose a nonlinear quantum toy model and discuss the distribution of corresponding Lee-Yang zeros. Utilizing the coupling ... ...

    Abstract The distribution of Lee-Yang zeros not only matters in thermodynamics and quantum mechanics, but also in mathematics. Hereby we propose a nonlinear quantum toy model and discuss the distribution of corresponding Lee-Yang zeros. Utilizing the coupling between a probe qubit and the nonlinear system, all Lee-Yang zeros can be detected in the dynamics of the probe qubit by tuning the coupling strength and linear coefficient of the nonlinear system. Moreover, the analytical expression of the quantum Fisher information matrix at the Lee-Yang zeros is provided and an interesting phenomenon is discovered. Both the coupling strength and temperature can simultaneously attain their precision limits at the Lee-Yang zeros. However, the probe qubit cannot work as a thermometer at a Lee-Yang zero if it sits on the unit circle.
    Language English
    Publishing date 2023-09-18
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2844562-4
    ISSN 2470-0053 ; 2470-0045
    ISSN (online) 2470-0053
    ISSN 2470-0045
    DOI 10.1103/PhysRevE.108.024104
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Esophageal reconstruction: Combined application of muscle tissue flap and inner chitosan tube stent in rabbits.

    Liu, Jiabao / Zhang, Xinyuan / Zhen, Qiang / Su, Yuguo / Han, Zhanbo / Chen, Gang

    Technology and health care : official journal of the European Society for Engineering and Medicine

    2016  Volume 24 Suppl 2, Page(s) S505–12

    Abstract: Background: Esophageal reconstruction is the key issue in esophageal surgery. However, currently there is no satisfied technique to repair esophagus after surgery.: Objective: To combine an inner chitosan stent and a muscle tissue with vascular ... ...

    Abstract Background: Esophageal reconstruction is the key issue in esophageal surgery. However, currently there is no satisfied technique to repair esophagus after surgery.
    Objective: To combine an inner chitosan stent and a muscle tissue with vascular pedicle to repair the esophageal defect in cervical segment.
    Methods: Esophageal defect was repaired using the combination of a muscle tissue flap and a chitosan tube stent in experimental group while only muscle tissue flap was utilized in controls for comparison. One animal in each group was sacrificed at week 3, 6 and 9 after operation respectively to exam the healing status. Barium X-ray was used to evaluate the esophageal status in 12 weeks.
    Results: Histology showed the inflammatory response in 3 weeks after surgery, the chitosan stent was partially absorbed in 6 weeks, and there was no obvious fibrotic proliferation in experimental group; while the fibrotic proliferation and esophageal stenosis were obvious in controls, the chitosan stent was completely absorbed in 9 weeks, and squamous epidermis cells were observed. Twelve weeks later, the barium swallow went smoothly through the esophagus with noticeable peristalsis in the experimental group; esophageal stenosis without peristalsis was observed in controls.
    Conclusion: The combination of chitosan stent and muscle tissue flap is feasible to reconstruct a partial defect in esophagus.
    MeSH term(s) Animals ; Biocompatible Materials ; Chitosan ; Esophagus/physiopathology ; Esophagus/surgery ; Rabbits ; Reconstructive Surgical Procedures/methods ; Stents ; Surgical Flaps
    Chemical Substances Biocompatible Materials ; Chitosan (9012-76-4)
    Language English
    Publishing date 2016-04-29
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 1159961-3
    ISSN 1878-7401 ; 0928-7329
    ISSN (online) 1878-7401
    ISSN 0928-7329
    DOI 10.3233/THC-161175
    Database MEDical Literature Analysis and Retrieval System OnLINE

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