On the convergence of WKB approximations of the damped Mathieu equation.

Autor: Nwaigwe, Dwight
Předmět:
Zdroj: Journal of Mathematical Physics; Jun2021, Vol. 62 Issue 6, p1-7, 7p
Abstrakt: The form of the fundamental set of solutions of the damped Mathieu equation is determined by Floquet theory. In the limit as m → 0, we can apply WKB theory to get first order approximations of the fundamental set. WKB theory states that this approximation gets better as m → 0 and T is fixed. However, convergence of the periodic part and characteristic exponent is not addressed. We show that they converge to those predicted by WKB theory. We also provide a rate of convergence that is not dependent on T. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index