title: Unified derivation of tunneling times from decoherence functionals.
abstract: The four tunneling times, the Larmor time, the Büttiker-Landauer time, the Bohm-Wigner time, and the Pollak-Miller time, originally obtained from very different physical models, are derived in a unified manner from the Gell-Mann-Hartle decoherence functionals. The origin of the two types of derivatives in the expressions for these tunneling times is clarified at the level of Feynman paths.
authors.affiliation: Department of Information Science, Fukui University, 3-9-1 Bunkyo, Fukui, Fukui 910-8507, Japan.
authors.forename: Norifumi
authors.initials: N
authors.lastname: Yamada