Simulations show different rare-earth peak patterns across nuclear models
A preprint compares six nuclear level-density models across three parameterized neutron-star-merger outflow scenarios.
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Astronomers identify three likely wind-accreting pre-polars
Preprint: Optical polarimetry reported magnetic white dwarfs in at least four of nine selected candidates, while several systems remained unresolved.
Plasma scheme shows higher-order limit in one low-beta test
A preprint tests the method on seven numerical benchmarks, reporting instability growth and expected energy-error scaling, while fourth- and sixth-order versions fail in one extremely low-beta blast-wave test.
Four-agent code system reports higher combined benchmark scores
Preprint: MACGen reported higher combined function-and-security scores than Direct prompting on two benchmark suites; on CWEval, its average function score fell slightly.
Model links temperature to spin dynamics in a ferromagnet
Preprint: Mathematical calculations propose a temperature-dependent non-Abelian gauge potential, without experimental testing.
Preprint maps tractable and hard cases in election attacks
An arXiv preprint dated 26 Aug 2026 uses a divisible-population model and linear programming to compare formal election attacks.
Two-Center Gravity Saddles Match D1-D5 Index Terms
Preprint: An analytic comparison reports an infinite two-center match to the D1-D5 Farey-tail expansion, but no match for the tested black-ring and black-lens sector.
Simulation suggests shared O-RAN can support 50 MCX users
Preprint: An E2-conditioned model kept several public-safety service requirements within bounds in simulated shared networks, including under O-DU degradation.
Neutron-Diffusion Preprint Reports Faster PINN Calculations
The approach uses one low-resolution calculation to start both a flux network and a key model parameter, but evidence comes from four numerical benchmarks.
Small Subtrees Can Rebuild Two Evolutionary Trees, But Not Always
Preprint: A mathematical analysis finds that three-leaf clues can remain ambiguous, while near-complete clues identify the two source trees in broad size ranges.
Preprint establishes universal formulas for Hilbert schemes on surfaces
An arXiv version dated 26 Aug 2026 develops the κ-class framework for curve and surface families and gives explicit codimension-one surface formulas.
Machine learning maps six climate zones for solar modules
Preprint analysis combines simulated energy yield and module lifetime in a global model, but its climate groupings shift under small changes to feature-importance scores.
Climate models classify 18 tidally locked exoplanets as potentially habitable
Preprint simulations suggest stellar flux matters more than rotation, while pressure reshapes the hottest modeled worlds.
New math framework links arithmetic volume to equilibrium measures
Preprint: A theoretical analysis says theta and Bergman-type measures agree in key settings, while a broader convergence claim remains conjectural.
AI Theorem Provers Struggle to Turn Math Answers Into Proofs
Preprint results from MathAdv show a wide gap between natural-language answers and formal Lean 4 proof construction.
One AI auditor setup scored above a baseline, but results varied
Preprint: A computational benchmark found higher scores for one calibrated pairwise checkpoint, while concern-focused training showed a steep fall in false-positive calibration.
New benchmark tests whether AI video scores match human judgment
Preprint: An expanded benchmark uses more than 60,000 generated videos and 36,000 new annotations to assess aesthetics and generation quality.
Direct Neural Predictors Beat Generative Models in Rarefied-Flow Test
Preprint: Flow matching and diffusion reached low interpolation errors, but neither beat direct deterministic regressors on the additional cylinder test.
Quantum model links competing soft modes to tunable phase changes
Preprint: Analytical calculations associate two collective excitation channels with different multicritical phase diagrams in a generalized two-mode quantum Rabi model.
Leonid Model Forecasts Sharp 2033 Peak, Uncertain 2034 Split
Preprint: This Leonid dust-trail model projects quiet early years, a sharp 2033 peak and two 2034 peaks whose relative strength could reverse.