February 2025 – Page 4 – Kavli Institute Pre-Print Publications

Spectroastrometry and Reverberation Mapping of Active Galactic Nuclei. II. Measuring Geometric Distances and Black Hole Masses of Four Nearby Quasars

Posted by klaurent February 26, 2025Peking

Kavli Affiliate: Luis C. Ho | First 5 Authors: , , , , | Summary: The geometric distances of active galactic nuclei (AGNs) are challenging to measure because of their exceptionally compact structure yet vast cosmic distances. A combination of spectroastrometry and reverberation mapping (SARM) of broad-line regions (BLRs) constitutes a novel means to probe […]

Continue..

Choices Speak Louder than Questions

Posted by klaurent February 26, 2025February 17, 2026Stanford

Kavli Affiliate: Hsiao-Mei (Sherry) Cho| First 5 Authors: [#item_custom_name[1, [#item_custom_name[2, [#item_custom_name[3, [#item_custom_name[4, [#item_custom_name[5| Summary:Recent findings raise concerns about whether the evaluation of Multiple-Choice Question Answering (MCQA) accurately reflects the comprehension abilities of large language models. This paper explores the concept of choice sensitivity, which refers to the tendency for model decisions to be more influenced […]

Continue..

Growth and characterization of single crystal cubic TaN and hexagonal Ta$_2$N films on c-plane Sapphire

Posted by klaurent February 26, 2025Cornell

Kavli Affiliate: Farhan Rana | Summary:Two single crystal phases of tantalum nitride were stabilized on c-plane sapphire using molecular beam epitaxy. The phases were identified to be $δ$-TaN with a rocksalt cubic structure and $γ$-Ta$_2$N with a hexagonal structure. Atomic force microscopy scans revealed smooth surfaces for both the films with root mean square roughnesses […]

Continue..

A distinctive subset of microglia positioned at the paraventricular zone are dedicated to cleaning the cerebrospinal fluid

Posted by dbos February 25, 2025March 12, 2025Rockefeller

Kavli Affiliate: Li Zhao | Authors: Guoyang Zhou, Jian He, Baojie Mao, Guo Cheng, Rui Zhang, Qiang Wang, Xiaoli Liu, Jiaxin Zheng, Ming Wang, Li Zhao, Peng Shi, Xiao Z Shen and Shu Wan | Summary: The interconnected ventricles in the central nervous system are filled with cerebrospinal fluid (CSF) which serves multifaceted roles including […]

Continue..

Gauging the complex SYK model

Posted by klaurent February 25, 2025UCAS

Kavli Affiliate: Cheng Peng | First 5 Authors: , , , , | Summary: Motivated by SYK-like models describing near-BPS black holes in string/M-theory, we consider gauging the U$(1)$ symmetry of the complex SYK model in the presence of a Wilson line with charge $k$. At a fixed background gauge field, solutions to the Schwinger-Dyson […]

Continue..

Gauging the complex SYK model

Posted by dbos February 25, 2025UCAS

Kavli Affiliate: Cheng Peng | First 5 Authors: Ziruo Zhang, Cheng Peng, , , | Summary: Motivated by SYK-like models describing near-BPS black holes in string/M-theory, we consider gauging the U$(1)$ symmetry of the complex SYK model in the presence of a Wilson line with charge $k$. At a fixed background gauge field, solutions to […]

Continue..

Structural and Antigenic Characterization of Novel and Diverse Henipavirus Glycoproteins

Posted by dbos February 25, 2025March 12, 2025UCSF

Kavli Affiliate: Robert Edwards | Authors: Aaron J. May, Muralikrishna Lella, Jared Lindenberger, Alex Berkman, Ujjwal Kumar, Moumita Dutta, Maggie Barr, Rob Parks, Amanda Newman, Xiao Huang, Kijun Song, Victor Ilevbare, Salam Sammour, Chan Soo Park, Radha Devkota Adhikari, Priyanka Devkota, Katarzyna Janowska, Yanshun Liu, Garrett Scapellato, Taylor N. Spence, Katayoun Mansouri, Robert J Edwards, […]

Continue..

Controllable Interlocking from Irregularity in Two-Phase Composites

Posted by klaurent February 25, 2025Caltech

Kavli Affiliate: Chiara Daraio | Summary:Natural materials often feature a combination of soft and stiff phases, arranged to achieve excellent mechanical properties, such as high strength and toughness. Many natural materials have even independently evolved to have similar structures to obtain these properties. For example, interlocking structures are observed in many strong and tough natural […]

Continue..

Quantum Wishlist: Lessons from Parton Showers

Posted by klaurent February 25, 2025Tokyo

Kavli Affiliate: Masahito Yamazaki | Summary:We discuss general criteria that could guide us in applying quantum algorithms/computers to problems in high-energy physics. We then discuss the particular example of parton showers with quantum interference. We summarize the basic ideas behind the classical and quantum parton shower Monte Carlo algorithms and highlight the importance of quantum/classical […]

Continue..

Hybrid stars with large quark cores within the parity doublet model and modified NJL model

Posted by klaurent February 25, 2025Peking

Kavli Affiliate: Renxin Xu | Summary:Using the parity doublet model (PDM) for hadronic matter and a modified Nambu-Jona-Lasinio (NJL) model for quark matter, we investigate the potential existence of two- and three-flavor quark matter in neutron star cores. Both models respect chiral symmetry, and a sharp first-order phase transition is implemented via Maxwell construction. We […]

Continue..