November 2025 – Page 6 – Kavli Institute Pre-Print Publications

Microseismic Noise Mitigation with Machine Learning for Advanced LIGO

Posted by klaurent November 24, 2025MIT

Kavli Affiliate: Richard Mittleman | Summary:The unprecedented sensitivity of the Laser Interferometer Gravitational-Wave Observatory, which enables the detection of distant astrophysical sources, also renders the detectors highly susceptible to low-frequency ground motion. Persistent microseisms in the 0.1-0.3 Hz band couple into the instruments, degrade lock stability, and contribute substantially to detector downtime during observing runs. […]

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Detection of the Cosmological 21 cm Signal in Auto-correlation at z ~ 1 with the Canadian Hydrogen Intensity Mapping Experiment

Posted by klaurent November 24, 2025MIT

Kavli Affiliate: Kiyoshi Masui | Summary:We present the first detection of the cosmological 21 cm intensity mapping signal in auto-correlation at z ~ 1 with the Canadian Hydrogen Intensity Mapping Experiment (CHIME). Using 94 nights of observation, we have measured the 21 cm auto-power spectrum over a frequency range from 608.2 MHz to 707.8 MHz […]

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Detection of the Cosmological 21 cm Signal in Auto-correlation at z ~ 1 with the Canadian Hydrogen Intensity Mapping Experiment

Posted by klaurent November 24, 2025MIT

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Topological BF Theory construction of twisted dihedral quantum double phases from spontaneous symmetry breaking

Posted by klaurent November 24, 2025Berkeley

Kavli Affiliate: Joel Moore | Summary:Nonabelian topological orders host exotic anyons central to quantum computing, yet established realizations rely on case-by-case constructions that are often conceptually involved. In this work, we present a systematic construction of nonabelian dihedral quantum double phases based on a continuous $O(2)$ gauge field. We first formulate a topological $S[O(2)times O(2)]$ […]

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Predicting partially observable dynamical systems via diffusion models with a multiscale inference scheme

Posted by klaurent November 24, 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:Conditional diffusion models provide a natural framework for probabilistic prediction of dynamical systems and have been successfully applied to fluid dynamics and weather prediction. However, in many settings, the available information at a given time represents only a small fraction of what […]

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Neural surrogates for designing gravitational wave detectors

Posted by klaurent November 24, 2025Caltech

Kavli Affiliate: Rana Adhikari | Summary:Physics simulators are essential in science and engineering, enabling the analysis, control, and design of complex systems. In experimental sciences, they are increasingly used to automate experimental design, often via combinatorial search and optimization. However, as the setups grow more complex, the computational cost of traditional, CPU-based simulators becomes a […]

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Collaborative Learning with Multiple Foundation Models for Source-Free Domain Adaptation

Posted by klaurent November 24, 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:Source-Free Domain Adaptation (SFDA) aims to adapt a pre-trained source model to an unlabeled target domain without access to source data. Recent advances in Foundation Models (FMs) have introduced new opportunities for leveraging external semantic knowledge to guide SFDA. However, relying on […]

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High-throughput computation of electric polarization in solids via Berry flux diagonalization

Posted by klaurent November 23, 2025Berkeley

Kavli Affiliate: Jeffrey Neaton | Summary:Electric polarization in the absence of an externally applied electric field is a key property of polar materials, but the standard interpolation-based ab initio approach to compute polarization differences within the modern theory of polarization presents challenges for automated high-throughput calculations. Berry flux diagonalization [J. Bonini et. al, Phys. Rev. […]

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A Catalog of Galactic Atomic Hydrogen Position-Position-Velocity Filaments

Posted by klaurent November 23, 2025Stanford

Kavli Affiliate: Susan Clark | Summary:We present a catalog of 3D Galactic HI filaments over 1/3 of the sky using Galactic Arecibo L-band Feed Array HI (GALFA-HI) data. The 3D filaments are defined to be linear HI features that are continuous in position-position-velocity (PPV) and are found with fil3d, an algorithm that expands on the […]

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Deep X-ray observation of NGC 3221: everything everywhere all at once

Posted by klaurent November 23, 2025Stanford

Kavli Affiliate: Steven Allen | Summary:We present a comprehensive analysis of 475 ks (438 ks unpublished & 37 ks archival) XMM-Newton/EPIC-pn observation of a nearby, highly inclined, star-forming, luminous infrared galaxy NGC 3221 through spatial, temporal, and spectral information. We confirm the presence of a low-luminosity (presumably Compton-thick) AGN. The 0.4$-$12 keV luminosity and the […]

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