Nanoscience – Kavli Institute Pre-Print Publications

Band-Resolved Superconducting Gaps via the Thermal Hall Effect in CeRu2

Posted by klaurent October 15, 2026Berkeley

Kavli Affiliate: James Analytis| Summary:Standard bulk probes of multiband superconductors cannot assign pairing gaps to specific electron or hole Fermi surfaces. Here we show that thermal Hall transport ($κ_xy$), constrained by specific heat and normal-state magnetotransport, resolves this ambiguity in the compensated heavy-fermion superconductor CeRu$_2$. Fixing the gap magnitudes ($Δ_e/k_Bapprox 13$K, $Δ_h/k_Bapprox 8$K) and band […]

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A Sample of Thick-Disk Stars Hosting Hot Jupiters

Posted by klaurent October 15, 2026Harvard

Kavli Affiliate: David Charbonneau | Summary:We present a homogeneous analysis of 268 confirmed and candidate transiting hot-Jupiter host stars with 4800K < Teff < 6200K. We combine high-resolution TRES spectra, Gaia, 2MASS and WISE photometry, and Gaia astrometry to determine these stars’ Teff, log g, Rstar, [alpha/Fe] and [Fe/H]. Based on their [alpha/Fe] and [Fe/H], […]

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Writability and the Pathway: A Controlled Study of Knowledge Injection into Addressed Memory

Posted by klaurent October 15, 2026Caltech

Kavli Affiliate: Wei Gao| Summary:Addressed conditional memory provides a local surface for post-hoc knowledge injection, but a successful write need not transfer to a new question or preserve untargeted behavior. This study combines a controlled GPT-2 comparison with production-memory experiments on Qwen3.8-Flash-Next-FP8 and DeepSeek-V4.1-Flash. Newly initialized modules attached to frozen GPT-2 are tested in a […]

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Combined Absorption and Emission Study of Air Species in NASA EAST

Posted by klaurent October 14, 2026Delft

Kavli Affiliate: Ronald Hanson | Summary:A suite of tunable diode laser absorption spectroscopy (TDLAS) diagnostics targeting rovibrational states of nitric oxide (NO) in the mid-infrared (MIR) and electronic states of atomic oxygen (O) and nitrogen (N) in the near-IR (NIR) was combined with optical emission spectroscopy (OES) for overlapping wavelengths at the NASA Electric Arc […]

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Transmission representation of the Josephson free energy beyond the short-junction limit

Posted by klaurent October 13, 2026Delft

Kavli Affiliate: Anton Akhmerov | Summary:Beenakker’s formula, $U(varphi)-U(0)=Δsum_nbigl(1-sqrt1-τ_nsin^2(varphi/2)bigr)$, expresses the zero-temperature energy-phase relation of a short Josephson junction through its normal-state transmission eigenvalues. We generalize this transmission representation beyond the short-junction limit and express the phase-dependent free energy of a time-reversal-symmetric $s$-wave junction as a Matsubara sum over channels with frequency-dependent transmissions. The representation constrains […]

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SchemaWeaver: Accelerating On-Device Mobile Agentic AI via Schema-Guided Parallel LLM Decoding

Posted by klaurent October 12, 2026Caltech

Kavli Affiliate: Wei Gao| Summary:Large language models (LLMs) on mobile devices can act as agents that call external software tools to complete complex tasks, but the major challenge of supporting on-device mobile agentic AI with LLMs is the long latency of LLM tool calling on mobile devices. In particular, the decode phase is the main […]

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Revealing topological protection through unprotected operations in a Majorana parity qubit

Posted by klaurent October 12, 2026Delft

Kavli Affiliate: Michael Wimmer | Summary:A recent experiment reported coherent parity oscillations between minimal Kitaev chains, demonstrating a Majorana parity qubit (arXiv:2607.09511). Operations on this qubit are controlled by coupling two Kitaev chains and are intrinsically unprotected against noise in the coupling strength. Here we show how the exponential protection in the underlying chains can […]

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AUGUstus: Autonomous Driving VLA Model with Unified Generation and Understanding

Posted by klaurent October 12, 2026Caltech

Kavli Affiliate: Wei Gao| Summary:Vision-language-action (VLA) models show strong potential for end-to-end autonomous driving by leveraging world knowledge and understanding to excel in long-tail scenarios. However, current VLAs have two limitations: 1) Degeneration into vision-action (VA) models. For low latency, regression/flow-based methods directly generate actions but underuse VLM understanding, causing unsafe, unexplainable actions. 2) Autoregressive […]

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Emergent low-energy thermodynamics and universal $B/T$ scaling in $α$-RuCl$_3$

Posted by klaurent October 12, 2026Cornell

Kavli Affiliate: Brad Ramshaw | Summary:Quantum spin liquids are exotic states of matter in which strongly interacting spins remain disordered down to zero temperature and host fractionalized excitations. This has motivated an extensive search for their realization in materials. Among candidate systems, $α$-RuCl$_3$ has drawn particular attention as a platform for the quantum spin liquid […]

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Simulation Study of Reconstruction of Cosmic Ray Extensive Air Shower with Thermal Neutron Detected by ENDA

Posted by klaurent October 9, 2026October 12, 2026Caltech, This Week: Nanoscience

Kavli Affiliate: Wei Gao| Summary:In the investigation of the "knee" region within the cosmic ray energy spectrum, extensive air shower (EAS) reconstruction by using different EAS secondary particles are of paramount importance for energy determination and composition separation and finally measurement of energy spectrum of different cosmic ray composition. The Electron-Neutron Detector Array (ENDA) is […]

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