Classical and quantal Lorentz covariant models of the electromagnetic radiation field

2000 ◽  
Vol 41 (7) ◽  
pp. 4607-4621
Author(s):  
Terje Aaberge
Author(s):  
Tuan Zhao ◽  
Jianhua Chen ◽  
Hongzhi Yao ◽  
Xiangfei Ji ◽  
Wei Rem

If there is an external radiation field surrounding the atom, it influences the value of the Lamb shift. It is shown that for black-body radiation at temperature comparable to 10 5 degrees, the change in the Lamb shift due to the influence of radiation is of the same order as the Lamb shift itself. Whereas the transitions to the continuum largely contribute to the Lamb shift (in the absence of radiation), the change in the Lamb shift is largely due to transitions to discrete states.


1978 ◽  
Vol 34 (3) ◽  
pp. 292-295
Author(s):  
Yu. I. Yalamov ◽  
E. R. Shchukin ◽  
L. A. Uvarova

2015 ◽  
Vol 137 (2) ◽  
Author(s):  
Gian Paolo Beretta ◽  
Elias P. Gyftopoulos

Starting from the properties of the electromagnetic radiation field at stable equilibrium, we derive expressions for the flows of energy and entropy between two black bodies at different temperatures, interacting only through electromagnetic radiation. We find that in general the interaction through radiation is nonwork but not heat. It is heat only if the temperature difference between the interacting systems is infinitesimal.


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