Overlooked Branch Cut in Steepest Descent Method: Switching Line and Atomic Domain

DOI10.1143/PTP.122.1311zbMath1198.41017OpenAlexW2004409949MaRDI QIDQ3551464

Satoshi Adachi, Ryohei Seto, Tadanori Hyouguchi

Publication date: 15 April 2010

Published in: Progress of Theoretical Physics (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1143/ptp.122.1311

zbMATH Keywords

asymptotic expansionssteepest descent methodBerry's phasebranch cut

Mathematics Subject Classification ID

Asymptotic approximations, asymptotic expansions (steepest descent, etc.) (41A60) Singular perturbation problems for ordinary differential equations in the complex domain (complex WKB, turning points, steepest descent) (34M60)

Related Items (1)

WKB and “cubic-WKB” methods as an adiabatic approximation

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