All Disciplines – Page 10 – Kavli Institute Pre-Print Publications

The white dwarf population of open clusters and their tidal tails. Tracers of contamination and stellar interactions

Posted by klaurent July 13, 2026Chicago

Kavli Affiliate: David W. Miller | Summary:Recent Gaia studies have identified numerous open clusters (OCs) & tidal tail catalogues, enabling systematic searches for white dwarfs (WDs) associated with clusters & their extended structures. We compile a literature-based sample of OC-WD pairs to validate WD membership in cluster cores & tails, investigate the initial-final mass relation […]

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The Environmental Dependence of Halo Intrinsic Alignments: Stronger Signals in Underdense Regions

Posted by klaurent July 13, 2026Tokyo

Kavli Affiliate: Masahiro Takada | Summary:The intrinsic alignment (IA) of galaxies and the dark matter haloes that host them is one of the leading astrophysical systematics for weak-lensing cosmology, yet how the IA signal depends on the large-scale environment in which haloes reside is not yet fully characterised. We use the high-resolution $N$-body simulations of […]

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Constraints on Annihilating Dark Matter from Gamma-Ray Background-Galaxy Shape Correlations: Model-independent Null Results and Moderate Template-based Signals

Posted by klaurent July 13, 2026Tokyo

Kavli Affiliate: Shunsaku Horiuchi | Summary:We revisit the cross-correlation between the unresolved $γ$-ray background and galaxy shapes to constrain the annihilation cross section of particle dark matter. Our analysis uses $γ$-ray photons from 14 years of observations with the Fermi Large Area Telescope (LAT), together with galaxy shape catalogs from the Dark Energy Survey Year […]

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CoSAG: Compact Semantic Anchor Gaussians via Training-Free Rate-Distortion Coding

Posted by klaurent July 11, 2026Caltech

Kavli Affiliate: Wei Gao| Summary:Open-vocabulary 3D scene understanding is commonly achieved by embedding 2D vision-language features such as CLIP into a 3D Gaussian Splatting scene, turning it into a text-queryable semantic field. However, attaching a high-dimensional feature to each of millions of Gaussians inflates a single scene to gigabytes, which makes storage and deployment the […]

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Stellar Multiplicity of M Dwarfs with Short-period Giant Planets, and the Characterization of TOI-5628Ab

Posted by klaurent July 11, 2026MIT

Kavli Affiliate: Avi Shporer | Summary:Binary stars are ubiquitous, yet it remains unclear how wide-orbit stellar companions influence the formation of hot Jupiters, particularly around M dwarfs. Here, we first report the discovery of TOI-5628Ab, a giant planet transiting a mid-type M dwarf ($M_ast=0.36pm0.02 M_odot$) every 4.34 days, accompanied by an associated white dwarf TOI-5628B […]

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Dynamical Nonrelativistic Spin Splitting via THz Nonlinear Phononics

Posted by klaurent July 11, 2026Cornell

Kavli Affiliate: Ankit Disa | Summary:Nonrelativistic spin splitting (NRSS) in collinear antiferromagnets offers a route to high-frequency spintronics immune to stray fields, but its dynamic control has remained elusive. We demonstrate, using density functional theory (DFT) and nonlinear phononics, that THz laser pulses can achieve ultrafast, reversible control of NRSS on picosecond timescales in antiferromagnets. […]

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The Precursor Genome: A Pairwise Reaction Dataset for Solid-State Synthesis

Posted by klaurent July 10, 2026Berkeley

Kavli Affiliate: Kristin Persson | Summary:Solid-state reactions remain the dominant route to inorganic materials, yet no large, machine-readable dataset reports their experimental protocols and outcomes with consistent provenance; this gap obstructs first-principles, data-driven, and machine-learning approaches to synthesis science. Here, we present the Precursor Genome, a dataset of 1,035 pairwise solid-state reactions generated autonomously by […]

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Bragg Interferometry of Moiré Superlattices: From Geometric Phase Principles to Atomic Reconstruction

Posted by klaurent July 10, 2026Berkeley

Kavli Affiliate: Kwabena Bediako| Summary:The emergence of moiré superlattices formed by twisting and stacking two-dimensional materials has created a need for characterization techniques capable of mapping sub-angstrom atomic reconstruction across micron-scale fields of view. This review surveys a suite of methodologies developed to extract geometric phases in electron microscopy and X-ray spectroscopy, with a primary […]

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Searching for heavy charged relics in the Earth

Posted by klaurent July 10, 2026Stanford

Kavli Affiliate: Peter Graham | Summary:We propose a method for detecting an ambient density of heavy, electrically-charged particles. Such particles would impact the Earth, lose energy in terrestrial matter, and become trapped. We study the accumulation of these rare particles in multiple target materials that provide large exposure, such as water and geological rocks. We […]

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Confinement drives valley splitting above 4K in buried silicon quantum wells

Posted by klaurent July 10, 2026July 20, 2026Delft

Kavli Affiliate: Giordano Scappucci | Summary:Controlling the energy scales of a quantum system is essential for defining robust qubits. In silicon spin qubits, the nearly degenerate conduction-band valleys create a leakage channel from the single-spin computational basis, posing a challenge to scaling and to shuttling-based architectures. Here, we measure the relevant energy scales of single-electron […]

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