D4 lattice is the unique minimum for two four-dimensional functions
Preprint: A mathematical analysis reports that the rescaled D4 root lattice has the smallest theta and Epstein zeta values among the specified four-dimensional lattices.
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Finite-element method shows higher accuracy in a poroelasticity test
A preprint reports conditional existence and convergence results, while a low-permeability case shows slightly suboptimal pressure behavior.
Optical cavity stores 300 millijoules in GHz burst test
Preprint: A laboratory cavity stored about 300 millijoules for 20 minutes, while simulations showed greater high-finesse sensitivity to CEO control.
Mathematical study finds a stable core for operator perturbations
Preprint: Finite-rank changes preserve β0(H), while arbitrary compact changes can push some operators outside it.
Corrected Harmful AI Examples Showed Less Misalignment
A preprint under review reports lower judged misalignment when selected harmful answers were replaced with corrections rather than deleted in several model tests.
Proton beam shows stronger cell-killing effect than X-rays
Preprint: A Bern Medical Cyclotron study reports steeper proton survival curves in two cell models, but dose uncertainty and an unresolved sensitivity mismatch limit the result.
Decoder disagreement flags high-risk shots in quantum-code tests
Preprint: Routing the highest-disagreement 20% of simulated shots to deeper search recovered most of the available gain, while hardware showed no net improvement.
Preprint finds standard errors falter in small trials with many covariates
Simulations suggest G-computation may be less sensitive to bias than logistic treatment-coefficient estimates, while uncertainty calculations become less reliable as covariate numbers rise.
Preprint Reports Lower Missing-Data Error With Prototype Context
The model had the best average error under simulated random missingness, but another method performed best when whole attributes were removed.
AI Tools Used to Compare and Revise Linguistic Theories (Preprint)
Case studies describe Claude and Codex helping formalize, compare and revise linguistic theories, while human experts remain essential.
Language-model method tops rivals in math and code tests
Preprint: OPMD carries a teacher model's internal computations into a student model and reports higher benchmark scores in selected tests, with important limits.
Fish schools may balance order with sudden collective turns
Preprint: A review links uneven social ties, selective attention and temporary leaders to how fish schools stay aligned and remain responsive.
Simulations point to faster state transfer in a calcium ion
Preprint: In a four-level model of the 40Ca+ ion, STIRSAP reached 99% fidelity in 220 microseconds, compared with 700 microseconds for conventional STIRAP.
Coding agents built most repositories, but small gaps remained
Preprint: Three model-and-tool configurations solved 7 to 10 of 11 repository tasks, while failed submissions passed most hidden tests.
GenAI Tasks Linked to Higher Cognitive Load in Developer Study
Preprint: A four-day field study of 21 SAP developers found work context explained more of the variation than wearable signals.
X-ray study suggests two ages for NGC 3079’s bubbles
Preprint: X-ray spectra suggest a young nuclear bubble and an older, galaxy-scale bubble, while the inferred chemistry shifts with the model.
AI Model Jev Beats Qwen and Gemma, but Language Gaps Persist
Preprint benchmarked Jev on 37 public datasets and 346,009 requests, finding strong results on several tasks but sharp weaknesses in some languages and fine-grained tests.
Liver-planning system reports lower simulated blood loss
Preprint: VoxelSage links CT analysis with a shielded resection planner, but the evidence remains limited to engineering tests, public cases and a synthetic simulator.
Particle model reports lower bound-state decay rate in Coulomb field
Preprint: This scalar-QED calculation reports a leading quadratic suppression and a positive fourth-order correction for light nuclear charges.
A particle model links X(2370) to a molecular state
Preprint: A theoretical calculation matches key properties of X(2370) and predicts decay patterns that future measurements could test.