Brundage et al. (2024). "The Malicious Use of AI in Cybersecurity"
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WARNING: Severe content mismatch detected. The retrieved content is a condensed matter physics paper unrelated to AI safety or cybersecurity. This record requires verification of the correct URL and content before use in the knowledge base.
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Abstract
Axion insulators possess a quantized axion field $θ=π$ protected by combined lattice and time-reversal symmetry, holding great potential for device applications in layertronics and quantum computing. Here, we propose a high-spin axion insulator (HSAI) defined in large spin-$s$ representation, which maintains the same inherent symmetry but possesses a notable axion field $θ=(s+1/2)^2π$. Such distinct axion field is confirmed independently by the direct calculation of the axion term using hybrid Wannier functions, layer-resolved Chern numbers, as well as the topological magneto-electric effect. We show that the guaranteed gapless quasi-particle excitation is absent at the boundary of the HSAI despite its integer surface Chern number, hinting an unusual quantum anomaly violating the conventional bulk-boundary correspondence. Furthermore, we ascertain that the axion field $θ$ can be precisely tuned through an external magnetic field, enabling the manipulation of bonded transport properties. The HSAI proposed here can be experimentally verified in ultra-cold atoms by the quantized non-reciprocal conductance or topological magnetoelectric response. Our work enriches the understanding of axion insulators in condensed matter physics, paving the way for future device applications.
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This resource appears to have a significant metadata mismatch: the content describes a condensed matter physics paper about high-spin axion insulators, not AI cybersecurity. No meaningful summary of the claimed topic can be derived from the available content.
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- •Critical mismatch: the URL, title, and tags reference AI/cybersecurity, but the actual content is a physics paper on axion insulators and topological matter.
- •The content discusses high-spin axion insulators (HSAI) in condensed matter physics, entirely unrelated to AI safety or malicious AI use.
- •No AI safety or cybersecurity content is present in the retrieved text; this record likely has an incorrect URL or content scraping error.
- •Tags (cybersecurity, timeline, automation) are inconsistent with both the physics content and the cited Brundage et al. authorship.
- •This entry should be flagged for review and re-verification before inclusion in the AI safety knowledge base.
Cited by 1 page
| Page | Type | Quality |
|---|---|---|
| Autonomous Cyber Attack Timeline | Analysis | 63.0 |
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# High spin axion insulator 00footnotetext: ∗ E-mail: liyuhang@nankai.edu.cn, jianghuaphy@fudan.edu.cn
Shuai Li
School of Physical Science and Technology, Soochow University, Suzhou 215006, China
Institute for Advanced Study, Soochow University, Suzhou 215006, China
Ming Gong
International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, China
Yu-Hang Li
Hua Jiang
Institute for Nanoelectronic Devices and Quantum Computing, Fudan University, Shanghai 200433, China
Institute for Advanced Study, Soochow University, Suzhou 215006, China
Interdisciplinary Center for Theoretical Physics and Information Sciences (ICTPIS), Fudan University, Shanghai 200433, China
X. C. Xie
International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, China
Institute for Nanoelectronic Devices and Quantum Computing, Fudan University, Shanghai 200433, China
Hefei National Laboratory, Hefei 230088, China
Interdisciplinary Center for Theoretical Physics and Information Sciences (ICTPIS), Fudan University, Shanghai 200433, China
Institute for Nanoelectronic Devices and Quantum Computing, Fudan University, Shanghai 200433, China
###### Abstract
Axion insulators possess a quantized axion field θ=π𝜃𝜋\\theta=\\pi protected by combined lattice and time-reversal symmetry, holding great potential for device applications in layertronics and quantum computing. Here, we propose a high-spin axion insulator (HSAI) defined in large spin-s𝑠s representation, which maintains the same inherent symmetry but possesses a notable axion field θ=(s+1/2)2π𝜃superscript𝑠122𝜋\\theta=(s+1/2)^{2}\\pi. Such distinct axion field is confirmed independently by the direct calculation of the axion term using hybrid Wannier functions, layer-resolved Chern numbers, as well as the topological magneto-electric effect. We show that the guaranteed gapless quasi-particle excitation is absent at the boundary of the HSAI despite its integer surface Chern number, hinting an unusual quantum anomaly violating the conventional bulk-boundary correspondence. Furthermore, we ascertain that the axion field θ𝜃\\theta can be precisely tuned through an external magnetic field, enabling the manipulation of bonded transport properties. The HSAI proposed here can be experimentally verified in ultra-cold atoms by the quantized non-reciprocal conductance or topological magnetoelectric response. Our work enriches the understanding of axion insulators in condensed matter physics, paving the way for future device applications.
Symmetry plays an essential role in understanding the behavior of condensed materials \[ [1](https://ar5iv.labs.arxiv.org/html/2404.12345#bib.bib1 ""), [2](https://ar5iv.labs.arxiv.org/html/2404.12345#bib.bib2 ""), [3](https://ar5iv.labs.arxiv.org/html/2404.12345#bib.bib3 ""), [4](https://ar5iv.labs.arxiv.org/html/2404.12345#bib.bib4 "")\]. For example, in the presence of time-reversal symmetry, three dimensional insulator typically
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