129 citations · 1k across the 41 of their papers we have counts for
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Radiative Corrections to the Stefan-Boltzmann Law
Finn Ravndal
Photons in blackbody radiation have non-zero interactions due to their couplings to virtual electron-positron pairs in the vacuum. For temperatures much less than the electron mass…
Applications of Effective Lagrangians
Finn Ravndal
Effective Lagrangians were originally used only at the tree level as so-called phenomenological Lagrangians since they were in general non-renormalizable. Today they are treated as…
Thermodynamics of a weakly interacting Bose-Einstein gas
T. Haugset, H. Haugerud, F. Ravndal
The one-loop effective potential for non-relativistic bosons with a delta function repulsive potential is calculated for a given chemical potential using functional methods. After…
Radiative Corrections to the Casimir Energy
Xinwei Kong, Finn Ravndal
The lowest radiative correction to the Casimir energy density between two parallel plates is calculated using effective field theory. Since the correlators of the electromagnetic f…
What is the Regularized Casimir Vacuum Energy Density?
Xinwei Kong, Finn Ravndal
The regularized total Casimir energy in spacetimes with boundaries is not in general equal to the integral of the regularized energy density. This paradoxical phenomenon is most tr…