2025 – Page 14 – Kavli Institute Pre-Print Publications

Coherent phonon motions and ordered vacancy compound mediated quantum path interference in Cu-poor CuIn$_{x}$Ga$_{(1-x)}$Se$_2$ (CIGS) with attosecond transient absorption

Posted by dbos June 5, 2025June 17, 2025Berkeley

Kavli Affiliate: Peidong Yang | First 5 Authors: Hugo Laurell, Jonah R. Adelman, Elizaveta Yakovleva, Carl Hägglund, Kostiantyn Sopiha | Summary: In this study, coherent phonon motion is observed in bandgap excited CuIn$_{x}$Ga$_{(1-x)}$Se$_2$ (CIGS) utilizing extreme ultraviolet (XUV) attosecond transient absorption spectroscopy across the Se M$_{4,5}$ absorption edge. Two frequencies of coherent phonon motion are […]

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Fentanyl reinforcement history has sex-specific effects on multi-step decision-making

Posted by dbos June 5, 2025June 17, 2025Hopkins

Kavli Affiliate: Patricia Janak | Authors: Eric Garr, Yifeng Cheng, Andy Dong and Patricia H. Janak | Summary: It is commonly thought that drug addiction involves a transition to habitual control of action, where the choice to consume drugs becomes automatized and reflects a failure to deliberate over possible negative outcomes. Determining whether the pursuit […]

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The TOI-1117 Multi-planetary System: 3 sub-Neptunes, 1 in both the Neptunian Desert and Radius Valley

Posted by dbos June 5, 2025June 17, 2025MIT

Kavli Affiliate: Sara Seager | First 5 Authors: Isobel S. Lockley, David J. Armstrong, Jorge Fernández Fernández, Sarah Millholland, Henrik Knierim | Summary: We present the discovery of three sub-Neptune planets around TOI-1117, a Sun-like star with mass $0.97pm0.02M_{odot}$, radius $1.05pm0.03R_{odot}$, age $4.42pm1.50$ Gyr and effective temperature $5635pm62$ K. Light curves from TESS and LCOGT […]

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Topological Freeze-out by Semi-Annihilation

Posted by dbos June 5, 2025June 17, 2025Tokyo

Kavli Affiliate: Hitoshi Murayama | First 5 Authors: Joe Davighi, Serah Moldovsky, Hitoshi Murayama, Christiane Scherb, Nudzeim Selimovic | Summary: We point out that a QCD-like dark sector can be coupled to the Standard Model by gauging the topological Skyrme current, which measures the dark baryon number in the infrared, to give a technically natural […]

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Backward Responsibility in Transition Systems Beyond Safety

Posted by dbos June 5, 2025June 17, 2025Cornell

Kavli Affiliate: Johannes Lehmann | First 5 Authors: Christel Baier, Rio Klatt, Sascha Klüppelholz, Johannes Lehmann, | Summary: As the complexity of software systems rises, methods for explaining their behaviour are becoming ever-more important. When a system fails, it is critical to determine which of its components are responsible for this failure. Within the verification […]

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Structured Labeling Enables Faster Vision-Language Models for End-to-End Autonomous Driving

Posted by dbos June 5, 2025June 17, 2025Peking

Kavli Affiliate: Ke Wang | First 5 Authors: Hao Jiang, Chuan Hu, Yukang Shi, Yuan He, Ke Wang | Summary: Vision-Language Models (VLMs) offer a promising approach to end-to-end autonomous driving due to their human-like reasoning capabilities. However, troublesome gaps remains between current VLMs and real-world autonomous driving applications. One major limitation is that existing […]

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The Chinese Pulsar Timing Array data release I. Single pulsar noise analysis

Posted by dbos June 5, 2025Peking

Kavli Affiliate: Kejia Lee | First 5 Authors: Siyuan Chen, Heng Xu, Yanjun Guo, Bojun Wang, R. Nicolas Caballero | Summary: The Chinese Pulsar Timing Array (CPTA) has collected observations from 57 millisecond pulsars using the Five-hundred-meter Aperture Spherical Radio Telescope (FAST) for close to three years, for the purpose of searching for gravitational waves […]

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Buried unstrained Ge channels: a lattice-matched platform for quantum technology

Posted by dbos June 5, 2025June 17, 2025Delft

Kavli Affiliate: Giordano Scappucci | First 5 Authors: Davide Costa, Karina Hudson, Patrick Del Vecchio, Lucas E. A. Stehouwer, Alberto Tosato | Summary: Ge and Si strained quantum wells have enabled the most advanced spin-qubit quantum processors, but they are deposited on defective, metamorphic SiGe substrates, which may impact device performance and scaling. Here we […]

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The Age and High Energy Environment of the Very Young Transiting Exoplanet TOI 1227b

Posted by dbos June 4, 2025June 17, 2025MIT

Kavli Affiliate: Moritz Guenther | First 5 Authors: Attila Varga, Joel H. Kastner, Alexander S. Binks, Hans Moritz Guenther, Simon J. Murphy | Summary: The mid-M star TOI~1227 hosts among the youngest known transiting exoplanets. We have conducted new X-ray imaging and optical spectroscopic observations of TOI 1227 aimed at ascertaining its age and the […]

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Cosmology Constraints from Type Ia Supernova Simulations of the Nancy Grace Roman Space Telescope Strategy Recommended by the High Latitude Time Domain Survey Definition Committee

Posted by dbos June 4, 2025June 17, 2025Chicago

Kavli Affiliate: Richard Kessler | First 5 Authors: Richard Kessler, Rebekah Hounsell, Bhavin Joshi, David Rubin, Masao Sako | Summary: Within the next few years, the upcoming Nancy Grace Roman Space Telescope will be gathering data for the High Latitude Time Domain Survey (HLTDS) that will be used to significantly improve the Type Ia supernova […]

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