Research output: Contribution to journal › Article › peer-review
A complex WKB method for adiabatic problems. / Fedotov, Alexander; Klopp, Frédéric.
In: Asymptotic Analysis, Vol. 27, No. 3-4, 01.09.2001, p. 219-264.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - A complex WKB method for adiabatic problems
AU - Fedotov, Alexander
AU - Klopp, Frédéric
PY - 2001/9/1
Y1 - 2001/9/1
N2 - This work is devoted to a new version of the complex WKB method suited for adiabatic perturbations of one-dimensional periodic Schrödinger operators. Therefore, we introduce an additional parameter, and it is this parameter (and not the variable of the equation) that will become complex. This naturally leads to canonical domains where we construct solutions of the Schrödinger equation with a standard asymptotic behavior. These can be used to compute the asymptotics of the exponentially small coefficients of transfer matrices (e.g., scattering matrices, monodromy matrices, etc.). We give an example of such a computation.
AB - This work is devoted to a new version of the complex WKB method suited for adiabatic perturbations of one-dimensional periodic Schrödinger operators. Therefore, we introduce an additional parameter, and it is this parameter (and not the variable of the equation) that will become complex. This naturally leads to canonical domains where we construct solutions of the Schrödinger equation with a standard asymptotic behavior. These can be used to compute the asymptotics of the exponentially small coefficients of transfer matrices (e.g., scattering matrices, monodromy matrices, etc.). We give an example of such a computation.
KW - Adiabatic perturbations
KW - Complex WKB method
KW - Periodic Schrödinger equation
UR - http://www.scopus.com/inward/record.url?scp=0035446787&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0035446787
VL - 27
SP - 219
EP - 264
JO - Asymptotic Analysis
JF - Asymptotic Analysis
SN - 0921-7134
IS - 3-4
ER -
ID: 35928194