653 citations
- University of ViennaAT117 papers
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6 papers · 1 filter
Reduction operators and exact solutions of generalized Burgers equations
Oleksandr A. Pocheketa, Roman O. Popovych
Reduction operators of generalized Burgers equations are studied. A connection between these equations and potential fast diffusion equations with power nonlinearity -1 via reducti…
Lie reduction and exact solutions of vorticity equation on rotating sphere
Alexander Bihlo, Roman O. Popovych
Following our paper [J. Math. Phys. 50 (2009) 123102], we systematically carry out Lie symmetry analysis for the barotropic vorticity equation on the rotating sphere. All finite-di…
Extended group analysis of variable coefficient reaction-diffusion equations with exponential nonlinearities
O. O. Vaneeva, R. O. Popovych, C. Sophocleous
The group classification of a class of variable coefficient reaction-diffusion equations with exponential nonlinearities is carried out up to both the equivalence generated by the…
Photo-electron momentum spectra from minimal volumes: the time-dependent surface flux method
Liang Tao, Armin Scrinzi
The time-dependent surface flux (t-SURFF) method is introduced for computing of strong-field infrared photo-ionization spectra of atoms by numerically solving the time-dependent Sc…
Gyrokinetic simulations of the tearing instability
R. Numata, W. Dorland, G. G. Howes +3
Linear gyrokinetic simulations covering the collisional -- collisionless transitional regime of the tearing instability are performed. It is shown that the growth rate scaling with…
Shapiro effect in atomchip-based bosonic Josephson junctions
Julian Grond, Thomas Betz, Ulrich Hohenester +3
We analyze the emergence of Shapiro resonances in tunnel-coupled Bose-Einstein condensates, realizing a bosonic Josephson junction. Our analysis is based on an experimentally relev…