Abstract:We build Gaussian wave packets for the linear Schrödinger equation and its finite difference space semi-discretization and illustrate the lack of uniform dispersive properties of the numerical solutions as established in Ignat and Zuazua (2009) [6]. It is by now well known that bigrid algorithms provide filtering mechanisms allowing to recover the uniformity of the dispersive properties as the mesh size goes to zero. We analyze and illustrate numerically how these high frequency wave packets split and propagat… Show more
“…In this paper we will not discuss the possible numerical approximation of the NSE as in [17,18,2,23] where there is a parameter h, the mesh size, that it is going to zero.…”
In this paper we analyze the dispersion property of some models involving Schrödinger equations. First we focus on the discrete case and then we present some results on graphs.
“…In this paper we will not discuss the possible numerical approximation of the NSE as in [17,18,2,23] where there is a parameter h, the mesh size, that it is going to zero.…”
In this paper we analyze the dispersion property of some models involving Schrödinger equations. First we focus on the discrete case and then we present some results on graphs.
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