Results 41 to 50 of about 4,641 (126)

Simplifying Parallelization of Scientific Codes by a Function-Centric Approach in Python

open access: yes, 2010
The purpose of this paper is to show how existing scientific software can be parallelized using a separate thin layer of Python code where all parallel communication is implemented.
Cai, Xing   +3 more
core   +1 more source

Space‐Time Boundary Elements on Graded Meshes for 3D Elastodynamics

open access: yesInternational Journal for Numerical Methods in Engineering, Volume 126, Issue 20, 30 October 2025.
ABSTRACT The solution to the elastodynamic equations in the exterior of a polygonal or polyhedral domain or a screen exhibits singularities at corners and edges. This paper presents a space‐time boundary element method in 3D on algebraically graded meshes to resolve these singularities, based on recently obtained error estimates for the weakly singular
Alessandra Aimi   +3 more
wiley   +1 more source

Classical-quantum correspondence for shape-invariant systems

open access: yes, 2015
A quantization procedure, which has recently been introduced for the analysis of Painlev\'e equations, is applied to a general time-independent potential of a Newton equation.
Grundland, A. M., Riglioni, D.
core   +1 more source

Bose-Einstein condensation at finite temperatures: Mean field laws with periodic microstructure [PDF]

open access: yes, 2015
At finite temperatures below the phase transition point, the Bose-Einstein condensation, the macroscopic occupation of a single quantum state by particles of integer spin, is not complete.
Margetis, Dionisios
core  

Involutive constrained systems and Hamilton-Jacobi formalism

open access: yes, 2014
In this paper, we study singular systems with complete sets of involutive constraints. The aim is to establish, within the Hamilton-Jacobi theory, the relationship between the Frobenius' theorem, the infinitesimal canonical transformations generated by ...
Bertin, M. C.   +2 more
core   +1 more source

Superradiant scattering in fluids of light

open access: yes, 2019
We theoretically investigate the scattering process of Bogoliubov excitations on a rotating photon-fluid. Using the language of Noether currents we demonstrate the occurrence of a resonant amplification phenomenon, which reduces to the standard ...
Faccio, Daniele   +3 more
core   +1 more source

Quantum extended crystal PDE's

open access: yes, 2011
Our recent results on {\em extended crystal PDE's} are generalized to PDE's in the category $\mathfrak{Q}_S$ of quantum supermanifolds. Then obstructions to the existence of global quantum smooth solutions for such equations are obtained, by using ...
Prástaro, Agostino
core  

On asymptotic nonlocal symmetry of nonlinear Schr\"odinger equations

open access: yes, 1998
A concept of asymptotic symmetry is introduced which is based on a definition of symmetry as a reducibility property relative to a corresponding invariant ansatz.
Bluman G.W.   +13 more
core   +2 more sources

Quantum Mechanics Without Wavefunctions

open access: yes, 2012
We present a self-contained formulation of spin-free nonrelativistic quantum mechanics that makes no use of wavefunctions or complex amplitudes of any kind.
Poirier, Bill, Schiff, Jeremy
core   +1 more source

Current progress toward isogeometric modeling of the heart biophysics. [PDF]

open access: yesBiophys Rev (Melville), 2023
Torre M   +3 more
europepmc   +1 more source

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