next up previous
Next: Diagonalization subroutines Up: Modifications introduced in version Previous: Calculation of the multipole Q

   
Scaling of the coupling constants

As described in Section 3.2 of II, the code HFODD allows for the scaling of the Skyrme-functional coupling constants by arbitrary factors which are read from the input data file. The scaling can be independently performed in the total-sum and isoscalar-isovector representations of the coupling constants, see Eqs. (I-14) and (I-15).

In version (v1.60r), the scaling formulas were incorrectly coded and as a result, under some very special circumstances described below, calculations were performed for values of the scaled coupling constants which were different from those intended by the user. This was happening provided that for the given coupling constant two conditions occurred simultaneously:

1.
Scaling factor of the isovector coupling constant was different than 1.
2.
Scaling factor of the isovector coupling constant was different than that of the isoscalar coupling constant.

This is a fairly unusual combination of scaling conditions, and hence the error escaped detection for a relatively long time. In particular, all results obtained in Ref. [3] are correct because they were obtained with equal scaling factors of the isovector and isoscalar coupling constant, and hence condition 2. above was not fulfilled. Obviously, calculations performed without scaling, i.e., with all scaling factors equal 1, are unaffected.


next up previous
Next: Diagonalization subroutines Up: Modifications introduced in version Previous: Calculation of the multipole Q
Jacek Dobaczewski
2000-03-01