All Disciplines – Page 5 – Kavli Institute Pre-Print Publications

Wave2Body: Rethinking mmWave Human Pose Estimation as Radar-to-Body Token Translation

Posted by klaurent July 21, 2026July 27, 2026Caltech, This Week: Nanoscience

Kavli Affiliate: Wei Gao| Summary:Millimeter-wave (mmWave) radar enables privacy-friendly human sensing, but its sparse point clouds are physical measurements of view-dependent electromagnetic reflections and only indirectly characterize body articulation. Recovering a complete 3D pose from such partial, geometry-dependent observations is therefore under-constrained. Existing methods directly regress joint coordinates from paired radar-pose data, relying on the […]

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Data-driven Design of Metal-Organic Frameworks with Tunable Negative Thermal Expansion

Posted by klaurent July 21, 2026July 27, 2026Berkeley, This Week: Nanoscience

Kavli Affiliate: Kristin Persson | Summary:Materials with negative thermal expansion (NTE) are essential for applications requiring precise control of thermal expansion. Owing to their exceptional chemical tunability, flexible architectures, and low-energy lattice vibrations, metal-organic frameworks (MOFs) represent a rich platform for exploring NTE. However, uncovering the structural motifs that govern NTE across the enormous MOF […]

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First results for second generation SiSeRO CCD devices

Posted by klaurent July 20, 2026July 27, 2026MIT, This Week: Astrophysics

Kavli Affiliate: Marshall Bautz | Summary:The Astro2020 Decadal recommended the development of a suite of next generation astronomical observatories spanning the X-ray to near-IR spectrum. These programs require fast, extremely low noise detectors to fulfill their science goals. To address this technology gap, Stanford X-ray Astronomy and Observational Cosmology (XOC) group, MIT Lincoln Laboratory (MIT-LL), […]

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Coherent Magnons Driven by Photomodulated Anisotropy in Altermagnetic MnTe

Posted by klaurent July 20, 2026July 27, 2026Berkeley, This Week: Nanoscience

Kavli Affiliate: James Analytis| Summary:Manganese telluride ($textMnTe$) has recently emerged as a prototypical $g$-wave altermagnet, providing an ideal platform to investigate the non-equilibrium excitations of altermagnetic order. Here, we report simultaneous spatial mapping of the local equilibrium orientation of the Néel vector, $varphi_L(mathbfr)$, alongside the amplitude, $Δvarphi(mathbfr,t)$, and frequency, $Ω(mathbfr)$, of photoexcited spin waves. Based […]

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The black hole S-matrix in gauge/gravity duality

Posted by klaurent July 20, 2026July 27, 2026Chicago, This Week: Astrophysics

Kavli Affiliate: Emil Martinec | Summary:A variety of examples of gauge/gravity duality have a Coulomb branch for the gauge theory dynamics. We exploit this feature to construct an S-matrix, in which the initial state is a shell of branes converging on the origin of the Coulomb branch. In the gravitational dual, the shell of branes […]

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Star formation powers optical line emission from the CGM

Posted by klaurent July 20, 2026July 27, 2026Peking, This Week: Astrophysics

Kavli Affiliate: Luis Ho | Summary:Using integral field spectroscopy, we explore the disk-halo interface, or the inner circumgalactic medium (CGM), of individual galaxies by constructing and analyzing emission-line maps for a large sample (72) of normal, low-redshift galaxies spanning three orders of magnitude in stellar mass and four orders in star formation rate (SFR). We […]

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Probing the Cosmic Axion Background via Axion-Photon Conversion in Filaments

Posted by klaurent July 20, 2026July 27, 2026Chicago, This Week: Astrophysics

Kavli Affiliate: Gordan Krnjaic | Summary:The cosmic axion background (CaB) is a hypothetical population of relativistic axions produced in the early universe. If the CaB is produced from dark matter decays, the axions in this population can convert to photons in the magnetic fields of cosmological filaments, resulting in an isotropic gamma ray background flux. […]

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VGOcc: Learning Visual-Geometric Gaussians for Vision-Centric 3D Driving Occupancy Prediction

Posted by klaurent July 20, 2026July 27, 2026Caltech, This Week: Nanoscience

Kavli Affiliate: Wei Gao| Summary:Vision-only occupancy prediction requires recovering a semantic 3D occupancy field from calibrated surround-view images, where each view provides observations with ambiguous depth along camera rays. Existing methods have progressed from dense structured representations to sparse Gaussian primitives, improving the efficiency of 3D scene representation. However, Gaussian learning still relies primarily on […]

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Optically Thick Outflow Driven by Supercritical Accretion May Explain Little Red Dots

Posted by klaurent July 20, 2026Peking

Kavli Affiliate: Luis Ho | Summary:Recent JWST observations have revealed a population of compact, optically red sources known as Little Red Dots (LRDs). A popular interpretation is that LRDs host massive black holes embedded in dense gaseous envelopes, yet the physical origin of such envelopes remains unclear. We propose that the optically thick outflow driven […]

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Adaptive Ridge-Regularized Hotelling Change-Point Tests for Functional Data

Posted by klaurent July 18, 2026Peking

Kavli Affiliate: Feng Long| Summary: We propose a unified ridge-regularized Hotelling framework for detecting and locating mean changes in functional time series. A growing basis expansion converts the functional observations into high-dimensional score vectors. Their long-run covariance is estimated by an edge-corrected difference-based procedure. Ridge regularization stabilizes inference under spectral decay. An explicit local-power formula […]

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