Real-Time Feynman Path Integral Realization of Instantons

2014/07/31 by Aleksey Cherman, Cherman, Aleksey, Mithat Ünsal +1 · 2 citations
Computer Science · Medicine · Physics and Astronomy · #Biofield Effects and Biophysics #Computational Physics and Python Applications #FOS: Physical sciences #High Energy Physics - Theory (hep-th) #Quantum, superfluid, helium dynamics

paper · pdf · doi:10.48550/arxiv.1408.0012

openalex publication_date 2014/07/31 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

In Euclidean path integrals, quantum mechanical tunneling amplitudes are associated with instanton configurations. We explain how tunneling amplitudes are encoded in real-time Feynman path integrals. The essential steps are borrowed from Picard-Lefschetz theory and resurgence theory.

Cited by

• Instantons meet resonances: Unifying two seemingly distinct approaches to quantum tunneling
• Supersymmetric Quantum Mechanics and Path Integrals

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