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Non‐radiative transitions: Fundamental difficulties of the adiabatic base approach
Author(s) -
Wagner M.
Publication year - 1983
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221150212
Subject(s) - adiabatic process , radiative transfer , quantum tunnelling , transitive relation , operator (biology) , base (topology) , coupling (piping) , physics , adiabatic theorem , level crossing , theoretical physics , quantum mechanics , statistical physics , mathematics , chemistry , mathematical analysis , materials science , engineering , mechanical engineering , biochemistry , repressor , combinatorics , transcription factor , gene , metallurgy
The adiabatic base approach is extensively used in literature (“Condon” approximation, “non‐Condon” approximations). Two fundamental difficulties are indicated: (a) for large Huang‐Rhys factors it is not the non‐adiabaticity operator which governs the non‐radiative decay but tunneling; (b) for a small transitive coupling parameter Δ very high potential barriers (with divergent area) are built up as a non‐adiabatic consequence of non‐crossing. A possible way out is shown by suggesting a release of the non‐crossing requirement.