Atoms and Light: Interactions pp 105-120 | Cite as

# The Semiclassical Description of Spontaneous Decay

Chapter

## Abstract

Formulas for the decay constant have been deduced in two places above. In the classical approach, the decay constant is defined through the equation

where

*W*(*t*) is the energy of the system at time*t*, and*P*(*t*) is the power of dissipation (or radiation). Classical electromagnetic theory gives Eq. (3.31) for*P*(0), and the classical energy of a mechanical oscillator is*W*(0) = 4π^{2}*v**mA*. The result for the classical decay constant of an oscillating and radiating charge is Eq. (3.27):## Keywords

Decay Constant Spontaneous Emission Excited Atom Probability Amplitude Radiation Reaction
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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## References

- 1.D. T. Pegg, “Absorber Theory in Quantum Optics,”
*Phys. Ser.*, T12, 14–18 (1986).ADSCrossRefGoogle Scholar - 2.T. H. Boyer, “Derivation of the Blackbody Radiation Spectrum Without Quantum Assumptions,”
*Phys. Rev.*182, 1374–1383 (1969).ADSCrossRefGoogle Scholar - 3.H. A. Bethe, “The Electromagnetic Shift of Energy Levels,”
*Phys. Rev.*72, 339–341 (1947).ADSMATHCrossRefGoogle Scholar

## Copyright information

© Springer Science+Business Media New York 1991