Agmon-Type Estimates for a Class of Difference Operators
Agmon-Type Estimates for a Class of Difference Operators
复制标题
一类差分算子的 Agmon 型估计
DOI:
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发表时间:
2008
期刊:
影响因子:
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通讯作者:
Elke Rosenberger
中科院分区:
文献类型:
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作者:
M. Klein;Elke Rosenberger
Abstract.We analyze a general class of self-adjoint difference operators $$H_varepsilon = T_varepsilon + V_varepsilon,, {
m on},,
ell^2((varepsilon {mathbb{Z}})^d)$$, where Vε is a one-well potential and ε is a small parameter. We construct a Finslerian distance d induced by Hε and show that short integral curves are geodesics. Then we show that Dirichlet eigenfunctions decay exponentially with a rate controlled by the Finsler distance to the well. This is analog to semiclassical Agmon estimates for Schrödinger operators.