klaurent – Page 2 – Kavli Institute Pre-Print Publications

Agentar-DeepFinance-300K: A Large-Scale Financial Dataset via Systematic Chain-of-Thought Synthesis Optimization

Posted by klaurent July 17, 2025July 21, 2025Caltech, This Week: Nanoscience

Kavli Affiliate: Lihong Wang | First 5 Authors: Xiaoke Zhao, Xiaoke Zhao, , , | Summary: Recent advancements in large language models (LLMs) have demonstrated remarkable general reasoning capabilities, holding significant potential for applications in the financial domain, a field that requires robust and reliable reasoning. It has been demonstrated that distilling high-quality chain-of-thought (CoT) […]

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Robust Beamforming Design for Secure Near-Field ISAC Systems

Posted by klaurent July 17, 2025July 21, 2025Berkeley, This Week: Nanoscience

Kavli Affiliate: Feng Wang | First 5 Authors: Ziqiang CHen, Ziqiang CHen, , , | Summary: This letter investigates the robust beamforming design for a near-field secure integrated sensing and communication (ISAC) system with multiple communication users (CUs) and targets, as well as multiple eavesdroppers. Taking into account the channel uncertainty constraints, we maximize the […]

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NSF-DOE Vera C. Rubin Observatory Observations of Interstellar Comet 3I/ATLAS (C/2025 N1)

Posted by klaurent July 17, 2025July 21, 2025Stanford, This Week: Astrophysics

Kavli Affiliate: Aaron Roodman | First 5 Authors: Colin Orion Chandler, Colin Orion Chandler, , , | Summary: We report on the observation and measurement of astrometry, photometry, morphology, and activity of the interstellar object 3I/ATLAS, also designated C/2025 N1 (ATLAS), with the NSF-DOE Vera C. Rubin Observatory. The third interstellar object, comet 3I/ATLAS, was […]

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The Physical Origin and Time Lag of Multi-Frequency Flares from SgrA*

Posted by klaurent July 17, 2025July 21, 2025Peking, This Week: Astrophysics

Kavli Affiliate: Feng Yuan | First 5 Authors: Hong-Xuan Jiang, Hong-Xuan Jiang, , , | Summary: Sagittarius~A$^*$, the supermassive black hole at the center of our galaxy, exhibits flares across various wavelengths, yet their origins remain elusive. We performed 3D two-temperature General Relativistic Magnetohydrodynamic (GRMHD) simulations of magnetized accretion flows initialized from multi-loop magnetic field […]

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Low-energy domain wall racetracks with multiferroic topologies

Posted by klaurent July 16, 2025July 21, 2025Cornell, This Week: Nanoscience

Kavli Affiliate: Darrell Schlom | First 5 Authors: Arundhati Ghosal, Arundhati Ghosal, , , | Summary: Conventional racetrack memories move information by pushing magnetic domain walls or other spin textures with spin-polarized currents, but the accompanying Joule heating inflates their energy budget and can hamper scaling. Here we present a voltage-controlled, magnetoelectric racetrack in which […]

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Kinetics of Vacancy-Assisted Reversible Phase Transition in Monolayer MoTe$_2$

Posted by klaurent July 16, 2025July 21, 2025Caltech, This Week: Nanoscience

Kavli Affiliate: Wei Gao | First 5 Authors: Fei Shuang, Fei Shuang, , , | Summary: We investigate the kinetics of phase transition between the 2H and 1T$^prime$ phases in monolayer MoTe$_2$ using atomistic simulations based on a machine learning interatomic potential trained on SCAN-DFT data, combined with mean field kinetic theory to interpret the […]

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BASS LIII: The Eddington Ratio as the Primary Regulator of the Fraction of X-ray Emission in Active Galactic Nuclei

Posted by klaurent July 16, 2025July 21, 2025Peking, This Week: Astrophysics

Kavli Affiliate: Claudio Ricci | First 5 Authors: Kriti Kamal Gupta, Kriti Kamal Gupta, , , | Summary: Active galactic nuclei (AGN) emit radiation via accretion across the entire energy spectrum. While the standard disk and corona model can somewhat describe this emission, it fails to predict specific features such as the soft X-ray excess, […]

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A model-agnostic likelihood for the reinterpretation of the $boldsymbolB^+to K^+ νbarν$ measurement at Belle II

Posted by klaurent July 16, 2025July 23, 2025This Week: Astrophysics, Tokyo

Kavli Affiliate: T. Higuchi | First 5 Authors: Belle II Collaboration, Belle II Collaboration, , , | Summary: We recently measured the branching fraction of the $B^+rightarrow K^+nubarnu$ decay using 362 fb$^-1$ of on-resonance $e^+e^-$ collision data, under the assumption of Standard Model kinematics, providing the first evidence for this decay. To facilitate future reinterpretations […]

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Do Cosmic String Segments Emit Gravitational Waves?

Posted by klaurent July 16, 2025July 21, 2025This Week: Astrophysics, Tokyo

Kavli Affiliate: Satoshi Shirai | First 5 Authors: Akifumi Chitose, Akifumi Chitose, , , | Summary: Cosmic strings are predicted in various extensions of the Standard Model, including grand unified theories. Depending on the symmetry-breaking pattern, they can be either topologically stable or metastable. Intriguingly, metastable strings have been proposed as a possible origin of […]

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Text-driven Multiplanar Visual Interaction for Semi-supervised Medical Image Segmentation

Posted by klaurent July 16, 2025July 21, 2025This Week: Theoretical Physics, UCAS

Kavli Affiliate: Yi Zhou | First 5 Authors: Kaiwen Huang, Kaiwen Huang, , , | Summary: Semi-supervised medical image segmentation is a crucial technique for alleviating the high cost of data annotation. When labeled data is limited, textual information can provide additional context to enhance visual semantic understanding. However, research exploring the use of textual […]

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