3 papers
hep-th2024
Exact WKB in all sectors I: Potentials with degenerate saddles
Tatsuhiro Misumi, Cihan Pazarbaşı
We explore the exact-WKB (EWKB) method through the analysis of Airy and Weber types, with an emphasis on the exact quantization of locally harmonic potentials in multiple sectors.…
hep-th2020
Recursive Generation of The Semi-Classical Expansion in Arbitrary Dimension
Cihan Pazarbaşı
We present a recursive procedure, which is based on the small time expansion of the propagator, in order to generate a semi-classical expansion of the \textit{quantum action} for a…
hep-th2019
Renormalons in quantum mechanics
Cihan Pazarbasi, Dieter Van den Bleeken
We present a nonrelativistic one-particle quantum mechanics whose perturbative S-matrix exhibits a renormalon divergence that we explicitely compute. The potential of our model is…