The Schrödinger semigroup on some flat and non flat manifolds

Details The Schrödinger semigroup on some flat and non flat manifolds The Schrödinger semigroup on some flat and non flat manifolds

2011-03-04

arxiv.org/abs/1103.0971v1

Physics

Mathematical Physics

24 pages

Scientific paper

In this paper we apply known techniques from semigroup theory to the Schr\"odinger problem with initial conditions. To this end, we define the regularized Schr\"odinger semigroup acting on a space-time domain and show that it is strongly continuous and contractive in $L_p,$ with $3/2 < p < 3.$ These results can easily be extended to the case of conformal operators acting in the context of differential forms, but they require positiveness conditions on the curvature of the considered Minkowski manifold. For that purpose, we will use a Clifford algebra setting in order to highlight the geometric characteristics of the manifold. We give an application of such methods to the regularized Schr\"odinger problem with initial condition and we will extended our conclusions to the limit case. For the torus case and a class of non-oriented higher dimensional M\"obius strip like domains we also give some explicit formulas for the fundamental solution.

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