Comment on "Interface tension of Bose-Einstein condensates" by Bert Van Schaeybroeck, Phys. Rev. A 78, 023624-9 (2008)

The purpose of the comment is to point out that the leading term of the Ginzburg-Landau nonanalytical correction to the interface tension of Bose-Einstein condensates with strong segregation and the surface tension of extreme type-I superconductors are described by a common coefficient derived from the universal equation for the phase boundary. The agreement between the numerical value of the coefficients gives a hint that this can be an exact result which deserves to be checked. The outcome will be of interest for physicists working in both fields.