Modified Fermi’s golden rule rate expressions
Journal Article
·
· Journal of Chemical Physics
- City Univ. of New York (CUNY), NY (United States). Queens College; Korea Institute for Advanced Study, Seoul (Korea, Republic of); Korea Advanced Inst. Science and Technology (KAIST), Daejeon (Korea, Republic of)
- Korea Advanced Inst. Science and Technology (KAIST), Daejeon (Korea, Republic of)
Fermi’s golden rule (FGR) serves as the basis for many expressions of spectroscopic observables and quantum transition rates. The utility of FGR has been demonstrated through decades of experimental confirmation. However, there still remain important cases where the evaluation of a FGR rate is ambiguous or ill-defined. Examples are cases where the rate has divergent terms due to the sparsity in the density of final states or time dependent fluctuations of system Hamiltonians. Strictly speaking, assumptions of FGR are no longer valid for such cases. However, it is still possible to define modified FGR rate expressions that are useful as effective rates. The resulting modified FGR rate expressions resolve a long standing ambiguity often encountered in using FGR and offer more reliable ways to model general rate processes. Finally, simple model calculations illustrate the utility and implications of new rate expressions.
- Research Organization:
- City Univ. of New York (CUNY), NY (United States); City Univ. of New York (CUNY), NY (United States). Queens College
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- SC0021413
- OSTI ID:
- 3011259
- Alternate ID(s):
- OSTI ID: 2421926
- Report Number(s):
- DOE-QC-21413-4
- Journal Information:
- Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 1 Vol. 159; ISSN 1089-7690; ISSN 0021-9606
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
71 CLASSICAL AND QUANTUM MECHANICS
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Chemistry
Electron transfer
Excitation energy transfer
Fermi's golden rule
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Marcus equation
Molecular dynamics
Nonadiabatic process
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Quantum fluctuations
Quantum transition rate
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71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
Bath spectral density
Chemistry
Electron transfer
Excitation energy transfer
Fermi's golden rule
Fluorescence resonance energy transfer
Marcus equation
Molecular dynamics
Nonadiabatic process
Perturbation theory
Physics
Quantum fluctuations
Quantum transition rate
Spectroscopy
Statistical fluctuations
Time dependent fluctuations