Abstract
In this paper, we consider the 2D-Schrödinger operator with constant magnetic field H(V)=(Dx−By)2+Dy2+Vh(x,y), where V tends to zero at infinity and h is a small positive parameter. We will be concerned with two cases: the semi-classical limit regime Vh(x,y)=V(hx,hy), and the large coupling constant limit case Vh(x,y)=h−δV(x,y). We obtain a complete asymptotic expansion in powers of h2 of tr(Φ(H(V),h)), where Φ(⋅,h)∈C0∞(R;R). We also give a Weyl type asymptotics formula with optimal remainder estimate of the counting function of eigenvalues of H(V).
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