Category: Physical Sciences
Noise-canceling method computes finite-temperature elastic constants
What the study found The study shows that elastic constants, which are central material properties, can be computed at finite temperature in both thermally ordered and disordered systems using a noise-cancellation approach. Why the authors say this matters The authors say this matters because finite-temperature calculations often have poor signal-to-noise ratios, strong anharmonic effects, or…
Unified theory links classical and quantum ergotropy
What the study found The study finds a general analytical expression for ergotropy, or available energy, in classical systems and shows that it emerges as the classical limit of the quantum expression for classically ergodic systems. The authors present this as a unified theory of classical and quantum ergotropy. Why the authors say this matters…
EAC-Net predicts charge density with high accuracy
What the study found EAC-Net is a model for predicting real-space charge density that combines accuracy with a physically grounded atomic decomposition. The authors report that it can achieve errors typically below 1% across the periodic table and generalize well to diverse chemical environments. Why the authors say this matters The study suggests that EAC-Net…
Post-training pruning makes moment tensor potentials faster
What the study found The study found that a post-training, cost-aware pruning strategy can remove expensive basis functions from Moment Tensor Potentials (MTPs) with minimal loss of accuracy. Applied to nickel and silicon-oxygen systems, the resulting models were up to seven times faster than standard MTPs. Why the authors say this matters The authors say…
Boundary layer transition follows symmetry-breaking stages
What the study found The study finds that boundary layer transition in canonical K-type flow is not unstructured noise, but a sequence of organized temporal and spatial symmetry-breaking stages with measurable energy pathways. The authors describe a periodic, spanwise-symmetric fundamental harmonic response, followed by quasi-periodic, aperiodic, and then anti-symmetric structures. Why the authors say this…
Thermostat choices affect sampling in molecular dynamics simulations
What the study found Thermostat algorithms in constant-temperature molecular dynamics simulations do not all behave the same way. In this binary Lennard-Jones liquid glass-former model, the Nosé-Hoover chain and Bussi velocity-rescaling thermostats controlled temperature reliably, while the Grønbech-Jensen-Farago Langevin scheme gave the most consistent sampling of both temperature and potential energy. Why the authors say…
PineAPPL and MATRIX are linked for NNLO interpolation grids
What the study found The study presents an interface between PineAPPL and Matrix that can calculate fully differential cross sections as interpolation grids with next-to-next-to-leading order (NNLO) accuracy in quantum chromodynamics (QCD, the theory of strong interactions) and next-to-leading order (NLO) accuracy in electroweak (EW) theory. Why the authors say this matters The authors say…
NW/SE and NNW/SSE faults show higher slip tendency
What the study found NW/SE- and NNW/SSE-oriented faults near the selected study area showed higher slip tendency, meaning they were assessed as more susceptible to reactivation. The authors also identified some faults with both above-average slip tendency and potential moment magnitude. Why the authors say this matters The study suggests this information is relevant for…
Multi-Q magnetic order found in twisted WSe2
What the study found The study found previously overlooked types of magnetism in 3.65°-twisted WSe2 at moiré hole filling ν = 1. In part of the phase diagram, the magnetic order parameter varies in space with four non-zero wave vectors, corresponding to the three M-points and one K-point of the moiré Brillouin zone. Why the…
Navier–Stokes turbulence shows sensitivity in statistics
What the study found The study reports that Navier–Stokes turbulence can show “ultra-chaos,” meaning that very small changes in starting conditions can lead to large differences not only in the flow path but also in flow symmetry and statistical behavior. The authors present this using two-dimensional turbulent Kolmogorov flow as an example. Why the authors…
