August 2026 – Page 17 – Kavli Institute Pre-Print Publications

Theory of spin-wave transport in ferromagnet-superconductor heterostructures: Negative refraction, perfect imaging and temperature-controlled spin-wave optics

Posted by klaurent August 6, 2026August 19, 2026Delft

Kavli Affiliate: Toeno Van Der Sar | Summary:We investigate spin-wave transport in ferromagnetic insulator-superconductor (FMI-SC) heterostructures and develop a general theoretical framework for spin-wave optics in these hybrid systems. We demonstrate that Meissner screening by the superconductor gives rise to a range of unconventional wave phenomena, including negative phase- and group-velocity refraction, and reflection and […]

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AT2021yky: A Fast-Rising Optical Transient with Evolving Broad Hydrogen Emission Consistent with an Ambiguous Nuclear Transient

Posted by klaurent August 6, 2026August 19, 2026Stanford

Kavli Affiliate: Daniel R. Wilkins | Summary:Nuclear transients are powerful probes of supermassive black hole properties, offering insight into black hole mass, accretion physics, and the structure of galactic nuclei. Among these, a growing class of events cannot be classified as either tidal disruption events (TDEs) or active galactic nuclei (AGN) flares, and their physical […]

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Learning When to Trust via Selective Context Preference Optimization

Posted by klaurent August 6, 2026August 19, 2026Caltech

Kavli Affiliate: Wei Gao| Summary:Language models increasingly condition their answers on external signals, and a single misleading one can turn a correct answer wrong. The obvious remedy, training models to resist such signals, hides a failure mode: a model that ignores all context looks robust yet is useless when the context is worth trusting. We […]

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Tracing the Heart: An Evidence-Linked Pipeline for Heart-Failure Feature Engineering

Posted by klaurent August 6, 2026August 19, 2026Stanford

Kavli Affiliate: Zeeshan Ahmed | Summary:Electronic health record (EHR) feature engineering is a major bottleneck in clinical research and AI, accounting for 39-45% of data scientists’ workload. This is especially pronounced in heart failure, which affects an estimated 6.7 million U.S. adults and requires integrating fragmented EHR data with disease-specific, guideline-based clinical reasoning. Existing rule-based […]

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SPT-3G D1: Foreground-Robust Lensing Templates for Primordial Gravitational Wave Searches

Posted by klaurent August 6, 2026Chicago

Kavli Affiliate: Bradford Benson | Summary:Gravitational lensing of the cosmic microwave background (CMB) generates B-mode polarization that acts as a source of contamination to searches for B modes generated by primordial gravitational waves (PGWs). The strongest constraint on PGW B modes is already significantly limited by lensing B modes, as shown in the most recent […]

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AMSB in Truly Confining Gauge Theories

Posted by klaurent August 6, 2026August 19, 2026Tokyo

Kavli Affiliate: Hitoshi Murayama | Summary:We study deformation of supersymmetric $t$-confining (truly confininig) gauge theories with small anomaly mediation of supersymmetry breaking. We identify breaking pattern of global symmetries in the theories. These results can be compared in priciple to lattice simulation of non-supersymmetric theories (except for one of the cases where the theory is […]

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Luminosity function of quasars at $1.0

Posted by klaurent August 6, 2026August 19, 2026Peking

Kavli Affiliate: Linhua Jiang | Summary:We present a study of the evolution of type 1 quasars at $1.0<z<3.5$, covering the peak epoch of quasar activity. The quasar evolution has been extensively explored by a variety of previous works and the derived quasar luminosity functions (QLFs) are not well consistent with each other, presumably due to […]

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Divergence-free interpolation of tangential vector fields via matrix-valued kernels

Posted by klaurent August 6, 2026UCAS

Kavli Affiliate: Biao Huang | Summary:We develop and analyze a family of divergence-free kernel interpolation methods for tangential vector fields on the unit sphere. Starting from scalar radial kernels in Euclidean space, we construct tangent-valued, surface divergence-free matrix kernels without repeatedly applying surface differential operators. The construction separates the geometric enforcement of the divergence-free constraint […]

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SMA 200-400 GHz Survey for 10 faint Class II Disks in the Taurus Molecular Cloud

Posted by klaurent August 5, 2026August 19, 2026Peking

Kavli Affiliate: Feng Long| Summary: We have performed Submillimeter Array (SMA) observations of 198.0-407.5 GHz broadband spectra of 10 Class II protoplanetary disks in the Taurus-Auriga region. The 337 GHz flux densities ($F_rm 337 GHz$) of these objects are in the range of 8.2-34 mJy. The median and standard deviation of the 198-358 GHz spectral […]

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Identifying adaptive variation in spatially structured populations using low-coverage whole-genome sequencing data

Posted by dbos August 5, 2026August 19, 2026UCSD / Salk

Kavli Affiliate: Timothy Brown | Authors: Nikunj Goel, Christen M. Bossu, Seorim Yi, Erica C. N. Robertson, Timothy M. Brown, Peri E. Bolton, Ben J. Vernasco, Erika Zavaleta, Kristen C. Ruegg and Mevin B. Hooten | Summary: Successful implementation of evolutionary programs to rescue climatically threatened species requires identification of adaptive variation. Although many genotype-environment […]

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