Space Frequency Approximation for Quantum Hydrodynamic Models

S. Bertoluzza and P. Pietra


We introduce two space-frequency adaptive strategies for the numerical approximation of the solutions of quantum hydrodynamic models for semiconductors, based respectively on wavelets and wavelet packets. The two strategies are compared on a test case, and wavelet packets perform better in approximating with fewer degrees of freedom the high frequency dispersive oscillations of the solution.


Transport Theory and Stat. Phys. v. 28 (2000), pp. 375--395.
Download this paper.