🔬 Category

physics

1321 papers

🔬 physics

Influence of Hydrogen Concentration and Point Defects on the Deformation, Phase Transformation, and Dislocation Evolution in Zirconium: A Molecular Dynamics Study

This molecular dynamics study reveals that while hydrogen concentration has a marginal impact on the mechanical properties of zirconium, irradiation-induced point defects—particularly self-interstitial atoms—significantly degrade its tensile strength, accelerate phase transformations, and alter dislocation evolution under tensile loading.

Amir Alivaliollahi, Saba Ramezani, Ghasem Alahyarizadeh2026-10-27
🔬 physics

Tuning in Dielectric and Electrical Transport Properties of CuFe2O4 with Incorporation of Metal oxides (ZnO, WO3 & MgO) Nanostructures

This study demonstrates that synthesizing copper ferrite nanocomposites with varying weight fractions of ZnO, WO3, and MgO via powder mixing results in diverse nanostructures and significantly reduces dielectric constant, dissipation factor, and AC conductivity due to cation substitution and Maxwell-Wagner polarization effects.

kashif ali2026-10-27
🔬 physics

Bi2Se2Te and related tetradymites: SOC-induced optoelectronic tunability and multifaceted physical behavior

This study presents a comprehensive first-principles investigation of the ternary tetradymite Bi₂Se₂Te, revealing its mechanical brittleness, low thermal conductivity, and pronounced spin-orbit coupling-induced electronic and optical tunability that positions it as a promising candidate for multifaceted optoelectronic, thermoelectric, and quantum technologies.

M.M Rahman, F. Parvin, M.A. Hossain, A.K.M.A. Islam2026-10-27
🔬 physics

Nastrom-Gage-like Energy Spectral Transition in a Minimal Divergent Two-Layer Model

This study utilizes ultra-high-resolution simulations of a minimal two-layer baroclinic model to demonstrate that the atmospheric kinetic energy spectrum's transition from a steep k−3k^{-3} synoptic regime to a shallow k−5/3k^{-5/3} mesoscale regime is driven by a forward energy cascade into inertia-gravity waves excited via spontaneous imbalance, with the specific spectral slope modulated by static stability, rotation, and vertical wave escape.

Shuya Akmatsu, Masaki Yoshikawa, Keiichi Ishioka2026-10-27
🔬 physics

Programmable Coherent Memory Kernels for Quantum Reservoir Computing in Waveguide QED

This paper proposes a waveguide-QED quantum reservoir computing architecture that utilizes a driven Kerr resonator coupled to a waveguide at spatially separated points to create a coherent, non-Markovian feedback channel, enabling the engineering of task-relevant memory profiles through the interplay of geometric propagation delays and nonlinear Kerr dynamics.

Hong Jiang, Yu Wu, Yue Ban, Xi Chen, Juan José García-Ripoll2026-10-27
🔬 physics

A Comparative Study on 3d Sloshing Dynamics for Negative-G Acceleration

This study validates and compares the accuracy, performance, and computational cost of five OpenFOAM flow models (including laminar, LES, and k-ω SST) in simulating 3D negative-g sloshing dynamics within a domed circular cylinder tank under various fill ratios, excitation forces, and internal pressures to assess their capability in predicting sloshing forces, center of mass locations, and propellant discontinuities.

Mustafa Serdar ÇELEBİ, Utkan Çaliskan, İbrahim Özküçük2026-10-27
🔬 physics

When Does the Non-Hermitian Effective Description Fail? A Finite-Size Reliability Map

This paper establishes a finite-size reliability map for non-Hermitian effective descriptions by deriving a conservation-integral theorem that quantifies the drift between postselected and unconditional dynamics, revealing a universal scaling law for the failure threshold that depends on excitation number and system size to provide platform-independent design rules for dissipative quantum experiments.

H.-Y. Liu2026-10-27
🔬 physics

Finite Local Information Capacity in Continuum Dynamics

This paper establishes a regulator-resolved framework that distinguishes finite local information capacity from spatial lattice spacing and coarse-graining scales, deriving operational error bounds and an effective sigma-model action, and validating the approach through numerical tests on a Klein–Gordon chain to provide a controlled foundation for finite-information models without asserting a unique theory of quantum gravity.

Florian Neukart, Eike Marx2026-10-26