816 papers
This paper benchmarks mixed quantum-classical dynamics methods, specifically Ehrenfest and Fewest-Switches Surface Hopping with decoherence corrections, against exact quantum simulations to demonstrate their reliability and computational efficiency for studying nonadiabatic photochemistry in collective electronic strong coupling regimes.
This study uses Monte Carlo simulations to demonstrate that quasi-three-dimensional stick percolation systems, despite having a higher percolation threshold than their two-dimensional counterparts, share the same universal finite-size scaling function as 2D continuum and lattice percolation.
Using particle tracking velocimetry with frozen deuterium tracers, this study presents evidence of anomalously long-lived vortex rings with multiquantum circulation in superfluid helium-4, challenging the standard paradigm that such vortices rapidly split into singly quantized filaments.
This paper establishes that the extreme value statistics of non-stationary, recurrent systems governed by infinite ergodic theory and an infinite invariant density are determined by the return exponent and the infinite measure, leading to a distinct universality class that deviates from the classical Fréchet, Gumbel, and Weibull distributions.
This paper establishes the well-posedness of the heat equation with homogeneous Dirichlet boundary conditions in time-evolving domains undergoing topological transitions by introducing anisotropic space-time function spaces and applying the Babuška-Banach theorem to prove existence, uniqueness, and a priori estimates for weak solutions.
This paper investigates the Gibbs phenomenon in the Fourier approximation of the sign function using Krawtchouk polynomials, demonstrating that unlike classical orthogonal polynomials, it exhibits a distinct Gibbs constant and a bounded steepness that converges to as the degree increases.
This study investigates the formation and inelastic interactions of solitons in the non-integrable Ostrovsky equation with anomalous dispersion, revealing that these waves can organize into regular or irregular trains and that, in closed systems, a dominant "soliton-champion" emerges by annihilating smaller solitons while exhibiting a recurrence phenomenon distinct from the Korteweg-de Vries equation.
This study investigates the scattering of hydrogen isotopes on a W(110) surface by comparing classical and quantum dynamics, revealing that quantum effects significantly enhance backscattering and produce resonance structures in absorption probabilities, particularly at low energies and for lighter isotopes.
This study demonstrates that using variational quantum Monte Carlo with neural-network trial wavefunctions to explicitly treat muons as quantum particles significantly improves the accuracy of predicted muon hyperfine constants compared to standard density functional theory methods that treat muons as fixed classical particles.
This paper establishes the existence and conditional energetic stability of rotating wave solutions for two-dimensional capillary liquid drops with constant vorticity by utilizing a Hamiltonian framework, bifurcation theory, and critical point theory.
This paper introduces convex optimization, specifically Linear Programming, as a tool to solve the inverse micromechanics problem for isotropic composites with spherical inclusions by determining component volume fractions from known dielectric constants and effective properties using the Eshelby-Mori-Tanaka model.
This paper presents a robust and unconditionally stable space-time Galerkin time-domain boundary element method for predicting acoustic scattering and shielding by complex geometries, which is validated through analytical cases and successfully applied to a practical trailing edge-mounted propeller scenario with good agreement to experimental data.
This study assesses the implementation of radiation protection systems in four Ethiopian hospitals, revealing that while background and idle radiation levels are safe, poor operational practices and a lack of monitoring equipment lead to dangerously high exposure for staff during active X-ray procedures, necessitating immediate training, modern equipment, and dedicated radiation protection oversight.
This study reveals that acetaldehyde exhibits two distinct roaming pathways during photodissociation—one at longer distances analogous to formaldehyde and a unique shorter-range pathway facilitated by repulsive interactions—suggesting that its enhanced roaming propensity stems from multiple mechanisms rather than just fragment mass.
This paper employs Lie Symmetry Analysis and Noether Point Symmetry methods to derive the symmetry generators and conserved quantities of the Einstein vacuum field equations, thereby offering a novel reformulation of Birkhoff's Theorem.
This paper utilizes the isomorphism between the six-dimensional nilpotence variety and within the pure spinor superfield formalism to classify and explicitly construct various six-dimensional supermultiplets, including vector, hyper, and supergravity multiplets, by associating them with line bundles and higher-rank equivariant vector bundles on projective spaces.
This paper demonstrates that future space-based gravitational wave detectors like LISA can use extreme mass-ratio inspirals involving braneworld black holes with tidal charges to place significantly stronger constraints on extra dimensions than current black hole shadow or ground-based observations.
This study demonstrates that intermolecular Coulombic decay (ICD) enables a novel collective energy transfer mechanism where multiple photoexcited pyridine molecules funnel energy to ionize a non-absorbing argon spectator atom, offering new insights for light harvesting and biomolecular photoprotection.
This paper presents a revised, energy-conserving theoretical model for the attenuation of long waves through regions of irregular floating ice and random bathymetry, which corrects previous over-predictions by utilizing ensemble averaging of transfer matrix eigenvalues and successfully reproduces key features of field data, including frequency-dependent attenuation rates and high-frequency roll-over effects.
This paper details the strategies and results of optimizing fresh air ventilation to successfully reduce radon concentration in the main hall of the 700-m deep JUNO underground laboratory from 1600 Bq/m³ to the required 100 Bq/m³, identifying underground water as a primary radon source.