All Disciplines – Page 58 – Kavli Institute Pre-Print Publications

Assessing Sensitivity of Brain-to-Scalp Blood Flows in Laser Speckle Imaging by Occluding the Superficial Temporal Artery

Posted by dbos January 31, 2025February 10, 2025Caltech

Kavli Affiliate: Changhuei Yang | First 5 Authors: Yu Xi Huang, Simon Mahler, Maya Dickson, Aidin Abedi, Yu Tung Lo | Summary: Cerebral blood flow is a critical metric for cerebrovascular monitoring, with applications in stroke detection, brain injury evaluation, aging, and neurological disorders. Non-invasively measuring cerebral blood dynamics is challenging due to the scalp […]

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The Local Galactic Transient Survey Applied to an Optical Search for Directed Intelligence

Posted by dbos January 31, 2025February 10, 2025MIT

Kavli Affiliate: Michael McDonald | First 5 Authors: Alex Thomas, Natalie LeBaron, Luca Angeleri, Phillip Morgan, Varun Iyer | Summary: We discuss our transient search for directed energy systems in local galaxies, with calculations indicating the ability of modest searches to detect optical Search for Extraterrestrial Intelligence (SETI) sources in the closest galaxies. Our analysis […]

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The Local Galactic Transient Survey Applied to an Optical Search for Directed Intelligence

Posted by dbos January 31, 2025MIT

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Observation of Photon Blockade in a Tavis-Cummings System

Posted by dbos January 30, 2025February 10, 2025Berkeley

Kavli Affiliate: Irfan Siddiqi | First 5 Authors: Brian Marinelli, Alex H. Rubin, Victoria A. Norman, Santai Yang, Ravi Naik | Summary: We observe blockade of microwave photons in a Tavis-Cummings system comprising a superconducting cavity and up to $N=3$ transmon qubits. The effect is characterized with photon number-resolving spectroscopy using an additional dispersively coupled […]

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BounTCHA: A CAPTCHA Utilizing Boundary Identification in Guided Generative AI-extended Videos

Posted by klaurent January 30, 2025Peking

Kavli Affiliate: Ke Wang | First 5 Authors: Lehao Lin, Ke Wang, Maha Abdallah, Wei Cai, | Summary: In recent years, the rapid development of artificial intelligence (AI) especially multi-modal Large Language Models (MLLMs), has enabled it to understand text, images, videos, and other multimedia data, allowing AI systems to execute various tasks based on […]

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A weakly compressible SPH method for RANS simulation of wall-bounded turbulent flows

Posted by dbos January 30, 2025February 10, 2025Berkeley

Kavli Affiliate: Feng Wang | First 5 Authors: Feng Wang, Zhongguo Sun, Xiangyu Hu, , | Summary: This paper presents a Weakly Compressible Smoothed Particle Hydrodynamics (WCSPH) method for solving the two-equation Reynolds-Averaged Navier-Stokes (RANS) model. The turbulent wall-bounded flow with or without mild flow separation, a crucial flow pattern in engineering applications, yet rarely […]

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Competition between excitonic insulators and quantum Hall states in correlated electron-hole bilayers

Posted by dbos January 30, 2025February 10, 2025Berkeley

Kavli Affiliate: Michael F. Crommie | First 5 Authors: Ruishi Qi, Qize Li, Zuocheng Zhang, Zhiyuan Cui, Bo Zou | Summary: Excitonic insulators represent a unique quantum phase of matter, providing a rich ground for studying exotic quantum bosonic states. Strongly coupled electron-hole bilayers, which host stable dipolar exciton fluids with an exciton density that […]

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TRIPP: A General Purpose Data Pipeline for Astronomical Image Processing

Posted by dbos January 30, 2025MIT

Kavli Affiliate: Michael McDonald | First 5 Authors: Alex Thomas, Natalie LeBaron, Luca Angeleri, Samuel Whitebook, Rachel Darlinger | Summary: We present the TRansient Image Processing Pipeline (TRIPP), a transient and variable source detection pipeline that employs both difference imaging and light curve analysis techniques for astronomical data. Additionally, we demonstrate TRIPP’s rapid analysis capability […]

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Better early than never: A new test for superluminal gravitational wave polarizations

Posted by dbos January 30, 2025February 10, 2025Chicago

Kavli Affiliate: Daniel E. Holz | First 5 Authors: Kristen Schumacher, Colm Talbot, Daniel E. Holz, Nicolás Yunes, | Summary: In some beyond-Einstein theories of gravity, gravitational waves can contain up to six polarizations, which are allowed to propagate at different speeds faster than light. These different propagation speeds imply that polarizations generated by the […]

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Five-dimensional single-shot fluorescence imaging using a polarized Fourier light-field microscope

Posted by dbos January 29, 2025February 10, 2025Caltech

Kavli Affiliate: Changhuei Yang | First 5 Authors: Oumeng Zhang, Changhuei Yang, , , | Summary: Single-shot fluorescence imaging techniques have gained increasing interest in recent years due to their ability to rapidly capture complex biological data without the need for extensive scanning. In this letter, we introduce polarized Fourier light field microscopy (pFLFM), a […]

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