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arXiv 2025年

作者： Cha, Jeong Hyeok Lee, Hyun-Yong Kim, Heung-Sik Department of Semiconductor Physics Kangwon National University Chuncheon24341 Korea Republic of Interdisciplinary Program in Earth Environmental System Science and Engineering Kangwon National University Chuncheon24341 Korea Republic of Division of Semiconductor Physics Korea University Sejong30019 Korea Republic of Department of Applied Physics Graduate School Korea University Sejong30019 Korea Republic of Institute of Quantum Convergence Technology Kangwon National University Chuncheon24341 Korea Republic of

Studying the real-time dynamics of strongly correlated systems poses significant challenges, which have recently become more manageable thanks to advances in density matrix renormalization group (DMRG) and tensor network methods. A notable development in this area is the introduction of a complex-time evolution scheme for tensor network states, originally suggested for solving Anderson impurity model and designed to suppress the growth of entanglement under time evolution. In this study, we employ the complex-time evolution scheme to investigate the dynamics of one-dimensional spin systems, specifically the transverse-field Ising model (TFIM) and the XXZ model. Our analysis revisits the dynamic critical exponent z of the TFIM and explores the dynamical structure factor in both gapped and gapless states of the XXZ model. Importantly, the complex-time evolution reproduces the results of real-time evolution while mitigating the rapid growth of quantum entanglement typically associated with the latter. These results demonstrate that the combination of complex-time evolution and extrapolation provides a robust and efficient framework for studying the dynamics of complex quantum systems, enabling more comprehensive insights into their behavior. © 2025, CC BY.

关键词： Quantum entanglement

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Cubic ferromagnet and emergent U(1) symmetry on its phase boundary

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arXiv 2022年

作者： Tu, Wei-Lin Lyu, Xinliang Ghazanfari, S.R. Wu, Huan-Kuang Lee, Hyun-Yong Kawashima, Naoki Division of Display and Semiconductor Physics Korea University Sejong30019 Korea Republic of Faculty of Science and Technology Keio University 3-14-1 Hiyoshi Kohoku-ku Yokohama223-8522 Japan Institute for Solid State Physics University of Tokyo Chiba Kashiwa277-8581 Japan Department of Physics Condensed Matter Theory Center Joint Quantum Institute University of Maryland College ParkMD20742 United States Department of Applied Physics Graduate School Korea University Sejong30019 Korea Republic of Interdisciplinary Program in E·ICT-Culture-Sports Convergence Korea University Sejong30019 Korea Republic of Trans-scale Quantum Science Institute The University of Tokyo Bunkyo Tokyo113-0033 Japan

We study the simplest quantum lattice spin model for the two-dimensional (2D) cubic ferromagnet by means of mean-field analysis and tensor network calculation. While both methods give rise to similar results in detecting related phases, the 2D infinite projected entangled-pair state (iPEPS) calculation provides more accurate values of transition points. Near the phase boundary, moreover, our iPEPS results indicate that it is more difficult to pin down the orientation of magnetic easy axes, and we interpret it as the easy-axis softening. This phenomenon implies an emergence of continuous U(1) symmetry, which is indicated by the low-energy effective model and has been analytically shown by the field theory. Our model and study provide a concrete example for utilizing iPEPS near the critical region, showing that the emergent phenomenon living on the critical points can already be captured by iPEPS with a rather small bond dimension. © 2022, CC BY.

关键词： Quantum entanglement

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Correction to: Role of NADPH oxidase and its therapeutic intervention in TGF-β-mediated EMT progression: an in vitro analysis on HeLa cervical cancer cells

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Applied Biological Chemistry 2021年第1期64卷 1-1页

作者： Muthuramalingam, Karthika Cho, Moonjae Kim, Youngmee Department of Biochemistry School of Medicine Jeju National University Jeju Republic of Korea Institute of Medical Science Jeju National University Jeju Republic of Korea Interdisciplinary Graduate Program in Advanced Convergence Technology & Science Jeju National University Jeju Republic of Korea

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Thermal Hall Effects of Spins and Phonons in Kagome Antiferromagnet Cd-Kapellasite

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Physical Review X 2020年第4期10卷 041059-041059页

作者： Masatoshi Akazawa Masaaki Shimozawa Shunichiro Kittaka Toshiro Sakakibara Ryutaro Okuma Zenji Hiroi Hyun-Yong Lee Naoki Kawashima Jung Hoon Han Minoru Yamashita The Institute for Solid State Physics The University of Tokyo Kashiwa 277-8581 Japan Graduate School of Engineering Science Osaka University Toyonaka 560-8531 Japan Department of Physics Chuo University Kasuga Bunkyo-ku Tokyo 112-8551 Japan Okinawa Institute of Science and Technology Graduate University Kunigami-gun 904-0495 Japan Department of Applied Physics Graduate School Korea University Sejong 30019 Korea Division of Display and Semiconductor Physics Korea University Sejong 30019 Korea Interdisciplinary Program in E·ICT-Culture-Sports Convergence Korea University Sejong 30019 Korea Department of Physics Sungkyunkwan University Suwon 16419 Korea

We investigate the thermal-transport properties of the kagome antiferromagnet Cd-kapellasite (Cd-K). We find that a field-suppression effect on the longitudinal thermal conductivity κxx sets in below approximately 25 K. This field-suppression effect at 15 T becomes as large as 80% at low temperatures, suggesting a large spin contribution κxxsp in κxx. We also find clear thermal Hall signals in the spin liquid phase in all Cd-K samples. The magnitude of the thermal Hall conductivity κxy shows a significant dependence on the sample’s scattering time, as seen in the rise of the peak κxy value in almost linear fashion with the magnitude of κxx. On the other hand, the temperature dependence of κxy is similar in all Cd-K samples; κxy shows a peak at almost the same temperature of the peak of the phonon thermal conductivity κxxph which is estimated by κxx at 15 T. These results indicate the presence of a dominant phonon thermal Hall κxyph at 15 T. In addition to κxyph, we find that the field dependence of κxy at low fields turns out to be nonlinear at low temperatures, concomitantly with the appearance of the field suppression of κxx, indicating the presence of a spin thermal Hall κxysp at low fields. Remarkably, by assembling the κxx dependence of κxysp data of other kagome antiferromagnets, we find that, whereas κxysp stays a constant in the low-κxx region, κxysp starts to increase as κxx does in the high-κxx region. This κxx dependence of κxysp indicates the presence of both intrinsic and extrinsic mechanisms in the spin thermal Hall effect in kagome antiferromagnets. Furthermore, both κxyph and κxysp disappear in the antiferromagnetic ordered phase at low fields, showing that phonons alone do not exhibit the thermal Hall effect. A high field above approximately 7 T induces κxyph, concomitantly with a field-induced increase of κxx and the specific heat, suggesting a coupling of the phonons to the field-induced spin excitations as the origin of κxyph.

关键词： Frustrated magnetism Spin liquid Thermal Hall effect Thermal conductivity

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Entanglement properties of disordered quantum spin chains with long-range antiferromagnetic interactions

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Physical Review B 2020年第21期102卷 214201-214201页

作者： Y. Mohdeb J. Vahedi N. Moure A. Roshani Hyun-Yong Lee R. N. Bhatt Stefan Kettemann Stephan Haas Department of Physics and Earth Sciences Jacobs University Bremen Bremen 28759 Germany Technische Universität Braunschweig Institut für Mathematische Physik Mendelssohnstr. 3 38106 Braunschweig Germany Department of Physics Sari Branch Islamic Azad University Sari 48164-194 Iran Department of Physics and Astronomy University of Southern California Los Angeles California 90089-0484 USA Department of Applied Physics Graduate School Korea University Sejong 30019 Korea Division of Display and Semiconductor Physics Korea University Sejong 30019 Korea Interdisciplinary Program in EċICT-Culture-Sports Convergence Korea University Sejong 30019 Korea Department of Electrical Engineering Princeton University Princeton New Jersey 08544 USA School of Natural Sciences Institute for Advanced Study Princeton New Jersey 08540 USA Division of Advanced Materials Science Pohang University of Science and Technology (POSTECH) Pohang 790-784 Korea

Entanglement measures are useful tools in characterizing otherwise unknown quantum phases and indicating transitions between them. Here we examine the concurrence and entanglement entropy in quantum spin chains with random long-range couplings, spatially decaying with a power-law exponent α. Using the strong disorder renormalization group (SDRG) technique, we find by analytical solution of the master equation a strong disorder fixed point, characterized by a fixed point distribution of the couplings with a finite dynamical exponent, which describes the system consistently in the regime α>12. A numerical implementation of the SDRG method yields a power-law spatial decay of the average concurrence, which is also confirmed by exact numerical diagonalization. However, we find that the lowest-order SDRG approach is not sufficient to obtain the typical value of the concurrence. We therefore implement a correction scheme which allows us to obtain the leading-order corrections to the random singlet state. This approach yields a power-law spatial decay of the typical value of the concurrence, which we derive both by a numerical implementation of the corrections and by analytics. Next, using numerical SDRG, the entanglement entropy (EE) is found to be logarithmically enhanced for all α, corresponding to a critical behavior with an effective central charge c=ln(2), independent of α. This is confirmed by an analytical derivation. Using numerical exact diagonalization (ED), we confirm the logarithmic enhancement of the EE and a weak dependence on α. For a wide range of partition size l, the EE fits a critical behavior with a central charge close to c=1, which is the same as for the clean Haldane-Shastry model with a power-law-decaying interaction with α=2. Only for small l≪L, in a range which increases with the number of spins N, we find deviations which are rather consistent with the strong disorder fixed point central charge c=ln(2). Furthermore, we find using ED that the conc

关键词： Magnetism Quantum entanglement Disordered systems Doped semiconductors Density matrix methods Exact diagonalization Renormalization group Tensor network methods

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Corrigendum to "Long-term outcome and predictors of vagus nerve stimulation for drug-resistant epilepsy: Real-world evidence from the Korean National Hospital Consortium" [Epilepsy Res. 210 (2025) 107511 0920-1211]

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Epilepsy research 2025年 211卷 107522页

作者： Seo-Young Lee Hyesung Lee Jae-Wook Cho Kyung Wook Kang Jong-Geun Seo Jon Soo Kim Joon-Won Kang Daeyoung Kim Young-Soo Kim Sun Ah Choi Jeonghoon Park Ji Hoon Phi Sang Ook Nam Won Seop Kim Jae-Moon Kim Ki Joong Kim Department of Neurology Kangwon National University Hospital Chuncheon Republic of Korea Interdisciplinary Graduate Program in Medical Bigdata Convergence Kangwon National University Chuncheon Republic of Korea. Department of Biohealth Regulatory Science Sungkyunkwan University Suwon Republic of Korea. Department of Neurology Pusan National University Yangsan Hospital Yangsan Republic of Korea Research Institute for Convergence of Biomedical Science and Technology Pusan National University School of Medicine Yangsan Republic of Korea. Department of Neurology Chonnam National University Hospital Kwangju Republic of Korea. Department of Neurology School of Medicine Kyungpook National University Daegu Republic of Korea. Department of Pediatrics Chungbuk National University Hospital Cheongju Republic of Korea. Department of Pediatrics Chungnam National University Hospital Daejeon Republic of Korea. Department of Neurology Chungnam National University Hospital Daejeon Republic of Korea. Department of Neurology Gyeongsang National University Hospital Jinju Republic of Korea. Department of Pediatrics Ewha Womans University College of Medicine Seoul Republic of Korea. Department of Neurology Kangwon National University Hospital Chuncheon Republic of Korea. Division of Pediatric Neurosurgery Seoul National University Children's Hospital Seoul National University College of Medicine Seoul Republic of Korea. Electronic address: phijh@snu.ac.kr. Department of Pediatrics Pusan National University School of Medicine Pusan Republic of Korea. Electronic address: neuroped@***. Department of Pediatrics Seoul National University College of Medicine Seoul Republic of Korea.

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Corrigendum to "Dual regulatory effects of neferine on amyloid-β and tau aggregation studied by in silico, in vitro, and lab-on-a-chip technology" [Biomed. Pharmacother. 172 (2024) 1-14/116226]

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Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie 2024年 181卷 117686页

作者： Yunkwon Nam Ritu Prajapati Sujin Kim Soo Jung Shin Da Yeon Cheong Yong Ho Park Hyun Ha Park Danyou Lim Yoojeong Yoon Gyudo Lee Hyun Ah Jung Insu Park Dong-Hyun Kim Jae Sue Choi Minho Moon Department of Biochemistry College of Medicine Konyang University 158 Gwanjeodong-ro Seo-gu Daejeon 35365 Republic of Korea. Department of Food and Life Science Pukyong National University Busan 48513 Republic of Korea. Department of Biochemistry College of Medicine Konyang University 158 Gwanjeodong-ro Seo-gu Daejeon 35365 Republic of Korea Research Institute for Dementia Science Konyang University 158 Gwanjeodong-ro Seo-gu Daejeon 35365 Republic of Korea. Department of Biotechnology and Bioinformatics Korea University Sejong 30019 Republic of Korea Interdisciplinary Graduate Program for Artificial Intelligence Smart Convergence Technology Korea University Sejong 30019 Republic of Korea. Department of Biomedical Engineering Konyang University Daejeon 35365 Republic of Korea. Department of Food Science and Human Nutrition Chonbuk National University Jeonju 54896 Republic of Korea. Department of Biomedical Engineering Konyang University Daejeon 35365 Republic of Korea. Electronic address: insupark@konyang.ac.kr. Departments of Pharmacology and Advanced Translational Medicine School of Medicine Konkuk University Seoul 05029 Republic of Korea. Electronic address: mose79@kku.ac.kr. Department of Food and Life Science Pukyong National University Busan 48513 Republic of Korea. Electronic address: choijs@pknu.ac.kr. Research Institute for Dementia Science Konyang University 158 Gwanjeodong-ro Seo-gu Daejeon 35365 Republic of Korea. Electronic address: hominmoon@konyang.ac.kr.

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Correction: Inhibition of IRP2-dependent reprogramming of iron metabolism suppresses tumor growth in colorectal cancer

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Cell communication and signaling : CCS 2024年第1期22卷 480页

作者： Jieon Hwang Areum Park Chinwoo Kim Chang Gon Kim Jaesung Kwak Byungil Kim Hyunjin Shin Minhee Ku Jaemoon Yang Ayoung Baek Jiwon Choi Hocheol Lim Kyoung Tai No Xianghua Zhao Uyeong Choi Tae Il Kim Kyu-Sung Jeong Hyuk Lee Sang Joon Shin Department of Medicine Yonsei University College of Medicine Seoul 03722 Korea. Songdang Institute for Cancer Research Yonsei University College of Medicine Seoul 03722 Korea. Infectious Diseases Therapeutic Research Center Korea Research Institute of Chemical Technology Daejeon 34114 Korea. Department of Chemistry Yonsei University Seoul 03722 Korea. Division of Medical Oncology Department of Internal Medicine Yonsei Cancer Center Yonsei University College of Medicine Seoul 03722 Korea. Department of Radiology Yonsei University College of Medicine Seoul 03722 Korea. Convergence Research Center for Systems Molecular Radiological Science Yonsei University Seoul 03722 Korea. Bioinformatics and Molecular Design Research Center Incheon 21983 Korea. College of Pharmacy Dongduk Women's University Seoul 02748 Korea. The Interdisciplinary Graduate Program in Integrative Biotechnology & Translational Medicine Yonsei University Incheon 21983 Korea. Division of Gastroenterology Department of Internal Medicine Yonsei University College of Medicine Seoul 03722 Korea. Infectious Diseases Therapeutic Research Center Korea Research Institute of Chemical Technology Daejeon 34114 Korea. leeh@krict.re.kr. Songdang Institute for Cancer Research Yonsei University College of Medicine Seoul 03722 Korea. ssj338@yuhs.ac. Division of Medical Oncology Department of Internal Medicine Yonsei Cancer Center Yonsei University College of Medicine Seoul 03722 Korea. ssj338@yuhs.ac. Convergence Research Center for Systems Molecular Radiological Science Yonsei University Seoul 03722 Korea. ssj338@yuhs.ac.

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Author Correction: Highly efficient, heat dissipating, stretchable organic light-emitting diodes based on a MoO3/Au/MoO3 electrode with encapsulation

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Nature communications 2021年第1期12卷 7355页

作者： Dae Keun Choi Dong Hyun Kim Chang Min Lee Hassan Hafeez Subrata Sarker Jun Su Yang Hyung Ju Chae Geon-Woo Jeong Dong Hyun Choi Tae Wook Kim Seunghyup Yoo Jinouk Song Boo Soo Ma Taek-Soo Kim Chul Hoon Kim Hyun Jae Lee Jae Woo Lee Donghyun Kim Tae-Sung Bae Seung Min Yu Yong-Cheol Kang Juyun Park Kyoung-Ho Kim Muhammad Sujak Myungkwan Song Chang-Su Kim Seung Yoon Ryu Division of Display and Semiconductor Physics Display Convergence College of Science and Technology Korea University Sejong Campus Sejong City Republic of Korea. Department of Applied Physics Korea University Sejong Campus Sejong City Republic of Korea. E-ICT-Culture-Sports Convergence Track Korea University Sejong Campus Sejong City Republic of Korea. Division of Display and Semiconductor Physics Display Convergence College of Science and Technology Korea University Sejong Campus Sejong City Republic of Korea. hassaniskt@***. Department of Applied Physics Korea University Sejong Campus Sejong City Republic of Korea. hassaniskt@***. School of Electrical Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon Republic of Korea. Department of Mechanical Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon Republic of Korea. Department of Advanced Materials Chemistry College of Science and Technology Korea University Sejong Campus Sejong City Republic of Korea. Interdisciplinary Graduate Program for Artificial Intelligence Smart Convergence Technology Korea University Sejong Republic of Korea. Jeonju Center Korea Basic Science Institute (KBSI) Analysis & Researcher Division Jeollabuk-do Republic of Korea. Department of Chemistry Pukyong National University 45 Yongso-Ro Nam-gu Busan Republic of Korea. Department of Physics Chungbuk National University Cheongju Republic of Korea. Surface Materials Division Korea Institute of Materials Science (KIMS) Changwon Republic of Korea. Surface Materials Division Korea Institute of Materials Science (KIMS) Changwon Republic of Korea. cskim1025@kims.re.kr. Division of Display and Semiconductor Physics Display Convergence College of Science and Technology Korea University Sejong Campus Sejong City Republic of Korea. justie74@korea.ac.kr. Department of Applied Physics Korea University Sejong Campus Sejong City Republic of Korea. justie74@korea.ac.kr. E-ICT-Culture-Sports Conve

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Silicone breast implant modification review: Overcoming capsular contracture

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Biomaterials Research 2018年第1期22卷 319-327页

作者： Shin, Byung Ho Kim, Byung Hwi Kim, Sujin Lee, Kangwon Choy, Young Bin Heo, Chan Yeong Seoul National University College of Medicine Department of Biomedical Engineering Seoul 03080 South Korea Seoul National University Department of Transdisciplinary Studies Graduate School of Convergence Science and Technology Seoul 08826 South Korea Seoul National University Interdisciplinary Program for Bioengineering College of Engineering Seoul 08826 South Korea Seoul National University Department of Plastic and Reconstructive Surgery College of Medicine Seoul 03080 South Korea Seoul National University Bundang Hospital Department of Plastic and Reconstructive Surgery Seongnam 13620 South Korea Seoul National University Institute of Medical and Biological Engineering Medical Research Center Seoul 03080 South Korea Advanced Institutes of Convergence Technology Suwon Gyeonggi-do 16229 South Korea

Background: Silicone implants are biomaterials that are frequently used in the medical industry due to their physiological inertness and low toxicity. However, capsular contracture remains a concern in long-term transplantation. To date, several studies have been conducted to overcome this problem. This review summarizes and explores these trends. Main body: First, we examined the overall foreign body response from initial inflammation to fibrosis capsule formation in detail and introduced various studies to overcome capsular contracture. Secondly, we introduced that the main research approaches are to inhibit fibrosis with anti-inflammatory drugs or antibiotics, to control the topography of the surface of silicone implants, and to administer plasma treatment. Each study examined aspects of the various mechanisms by which capsular contracture could occur, and addressed the effects of inhibiting fibrosis. Conclusion: This review introduces various silicone surface modification methods to date and examines their limitations. This review will help identify new directions in inhibiting the fibrosis of silicone implants. © 2018 The Author(s).

关键词： Capsular contracture Fibrosis Foreign body reaction Inflammation Modification Silicone implant

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