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quant-ph2023
Crossing singularities in the saddle point approximation
Job Feldbrugge, Dylan L. Jow, Ue-Li Pen
We describe a new phenomenon in the study of the real-time path integral, where complex classical paths hit singularities of the potential and need to be analytically continued bey…
quant-ph2023★ 1 cited
Complex classical paths in quantum reflections and tunneling
Job Feldbrugge, Dylan L. Jow, Ue-Li Pen
The real-time propagator of the symmetric Rosen-Morse, also known as the symmetric modified Pöschl-Teller, barrier is expressed in the Picard-Lefschetz path integral formalism usin…