3 papers
hep-th2026
Finite path integral limits work in cases where the perturbative series is not Borel summable
Ariel Edery
The perturbative expansion in powers of the coupling of observables in quantum field theory and quantum mechanics is known to yield an asymptotic series. If the original physical s…
quant-ph2026
Transition of a superposition of states under a delta-function pulse in a two-level system
Ariel Edery
Under a time-dependent perturbation, it is common to calculate the probability of a transition from one eigenstate to another eigenstate of a quantum system. Here we study the tran…
hep-th2026
Convergent perturbative series via finite path integral limits: application to energy at strong coupling of the anharmonic oscillator
Ariel Edery
Solving quantum field theories at strong coupling remains a challenging task. The main issue is that the usual perturbative series are asymptotic series which can be useful at weak…