Benet, LChadderton, LewisKun, SergeyWang, Qi2015-12-071050-2947http://hdl.handle.net/1885/27943We study coherent superpositions of clockwise and anticlockwise rotating intermediate complexes with overlapping resonances formed in bimolecular chemical reactions. Disintegration of such complexes represents an analog of a famous double-slit experiment. The time for disappearance of the interference fringes is estimated from heuristic arguments related to fingerprints of chaotic dynamics of a classical counterpart of the coherently rotating complex. Validity of this estimate is confirmed numerically for the H+ D2 chemical reaction. Thus we demonstrate the quantum-classical transition in temporal behavior of highly excited quantum many-body systems in the absence of external noise and coupling to an environment.Keywords: Chaotic systems; Coherent light; Electron transitions; Estimation; Heuristic algorithms; Numerical methods; Coherently rotating complexes; External noise; Many-body systems; Quantum-classical transition; Quantum theory200710.1103/PhysRevA.75.0621102015-12-07