二叉树上Schroedinger算子的一个精确估计
A Mourre estimate for a Schroedinger operator on a binary tree
摘要:
设G是一棵顶点为V的二叉树,H是作用在l^{2}(V)上的Schroedinger算子.空间l^{2}(V)分解为不变子空间,得到一个共轭算子A,可用于估计。我们证明了,对于满足一阶差分衰减条件的势q,H的一个精确估计成立。
英文摘要:
Let G be a binary tree with vertices V and let H be a Schroedinger operator acting on l^{2}(V). A decomposition of the space l^{2}(V) into invariant subspaces is exhibited yielding a conjugate operator A, for use in the Mourre estimate. We show that for potentials q satisfying a first order difference decay condition, a Mourre estimate for H holds.
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