dbos – Page 3 – Kavli Institute Pre-Print Publications

Coherently Coupled Carrier and Phonon Dynamics in Elemental Tellurium Probed by Few-Femtosecond Core-Level Transient Absorption

Posted by dbos November 13, 2024November 18, 2024Berkeley, This Week: Nanoscience

Kavli Affiliate: Peidong Yang | First 5 Authors: Jonah R. Adelman, Hugo Laurell, Lorenz Drescher, Han K. D. Le, Peidong Yang | Summary: The narrow bandgap semiconductor elemental tellurium (Te) has a unique electronic structure due to strong spin-orbit splitting and a lack of inversion symmetry of its helical lattice. Using broadband extreme ultraviolet core-level […]

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$S^5$: New insights from deep spectroscopic observations of the tidal tails of the globular clusters NGC 1261 and NGC 1904

Posted by dbos November 13, 2024November 18, 2024Chicago, This Week: Astrophysics

Kavli Affiliate: Alexander P. Ji | First 5 Authors: Petra Awad, Ting S. Li, Denis Erkal, Reynier F. Peletier, Kerstin Bunte | Summary: As globular clusters (GCs) orbit the Milky Way, their stars are tidally stripped forming tidal tails that follow the orbit of the clusters around the Galaxy. The morphology of these tails is […]

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The THESAN project: tracking the expansion and merger histories of ionized bubbles during the Epoch of Reionization

Posted by dbos November 13, 2024November 18, 2024MIT, This Week: Astrophysics

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Nathan Jamieson, Aaron Smith, Meredith Neyer, Rahul Kannan, Enrico Garaldi | Summary: The growth of ionized hydrogen bubbles in the intergalactic medium around early luminous objects is a fundamental process during the Epoch of Reionization (EoR). In this study, we analyze bubble sizes and their evolution using […]

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Intelligent Adaptive Metasurface in Complex Wireless Environments

Posted by dbos November 13, 2024November 18, 2024Peking, This Week: Astrophysics

Kavli Affiliate: Ran Wang | First 5 Authors: Han Qing Yang, Jun Yan Dai, Hui Dong Li, Lijie Wu, Meng Zhen Zhang | Summary: The programmable metasurface is regarded as one of the most promising transformative technologies for next-generation wireless system applications. Due to the lack of effective perception ability of the external electromagnetic environment, […]

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EgoVid-5M: A Large-Scale Video-Action Dataset for Egocentric Video Generation

Posted by dbos November 13, 2024November 18, 2024This Week: Theoretical Physics, UCAS

Kavli Affiliate: Zheng Zhu | First 5 Authors: Xiaofeng Wang, Kang Zhao, Feng Liu, Jiayu Wang, Guosheng Zhao | Summary: Video generation has emerged as a promising tool for world simulation, leveraging visual data to replicate real-world environments. Within this context, egocentric video generation, which centers on the human perspective, holds significant potential for enhancing […]

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Numerical Analysis of Lensless Imaging with Active Metasurfaces and Single-Pixel Detectors

Posted by dbos November 13, 2024November 18, 2024Caltech, This Week: Nanoscience

Kavli Affiliate: Harry A. Atwater | First 5 Authors: Julie Belleville, Prachi Thureja, Harry A. Atwater, , | Summary: We introduce a conceptual framework for a lensless imaging system which employs an active metasurface as a high-frequency, continuously tunable amplitude and phase modulation aperture, coupled to a discrete single-pixel detector. Using an array factor formalism, […]

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Allosteric regulation of the tyrosine phosphatase PTP1B by a protein-protein interaction

Posted by dbos November 12, 2024November 18, 2024Columbia, This Week: Neuroscience

Kavli Affiliate: Ann McDermott | Authors: Cassandra A Chartier, Virgil A Woods, Yunyao Xu, Anne E van Vlimmeren, Marko Jovanovic, Ann E McDermott, Daniel A Keedy and Neel H Shah | Summary: The rapid identification of protein-protein interactions has been significantly enabled by mass spectrometry (MS) proteomics-based methods, including affinity purification-MS, crosslinking-MS, and proximity-labeling proteomics. […]

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Crunch from AdS bubble collapse in unbounded potentials

Posted by dbos November 12, 2024November 18, 2024This Week: Astrophysics, Tokyo

Kavli Affiliate: Misao Sasaki | First 5 Authors: Kaloian D. Lozanov, Misao Sasaki, , , | Summary: We consider a scalar field theory with a Minkowski false vacuum and an unbounded (or very deep) true vacuum. We show compelling evidence that an AdS bubble of vanishing total energy, embedded in asymptotically flat spacetime, generically undergoes […]

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Real-time propagation of adaptive sampling selected configuration interaction wave function

Posted by dbos November 12, 2024November 18, 2024Berkeley, This Week: Nanoscience

Kavli Affiliate: Birgitta Whaley | First 5 Authors: Avijit Shee, Zhen Huang, Martin Head-Gordon, K. Birgitta Whaley, | Summary: We have developed a new time propagation method, time-dependent adaptive sampling configuration interaction (TD-ASCI), to describe the dynamics of a strongly correlated system. We employ the short iterative Lanczos (SIL) method as the time-integrator, which provides […]

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Two-dimensional room temperature ferromagnetic semiconductors

Posted by dbos November 12, 2024November 18, 2024This Week: Theoretical Physics, UCAS

Kavli Affiliate: Bo Gu | First 5 Authors: Jia-Wen Li, Gang Su, Bo Gu, , | Summary: To realize ferromagnetic semiconductors with high Curie temperature TC is still a challenge in spintronics. Recent experiments have obtained two-dimensional (2D) room temperature ferromagnetic metals, such as monolayers MnSe2 and Cr3Te6. In this paper, by the density functional […]

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