Connection between the "Strutinsky level density" and the semiclassical level density (published version)

Details Connection between the "Strutinsky level density" and the semiclassical level density (published version) Connection between the "Strutinsky level density" and the semiclassical level density (published version)

2005-08-03

arxiv.org/abs/nucl-th/0508010v2

Phys.Rev. C74 (2006) 054302

Physics

Nuclear Physics

Nuclear Theory

6 figures

Scientific paper

10.1103/PhysRevC.74.054302

We establish an analytical link between the level density obtained by means of the Strutinsky averaging method, and the semiclassical level density. This link occurs only in the so-called "asymptotic limit". It turns out that the Strutinsky method amounts to an approximation to the semiclassical method. This approximation contains an unavoidable remainder which constitutes an intrinsic noise in comparison to the semiclassical method. Thus, the "old" problem of the dependency of the Strutinsky procedure on the two free smoothing parameters of the averaging is intimately connected to this noise. On the other hand, we demonstrate that the noise of the method is small in the average density of states and in the average energy, whereas it might be non-negligible in the shell correction itself. In order to improve this method, we give a "rule" which consists simply of minimizing the relative error made on the average energy.

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