Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Constraining the surface properties of effective Skyrme interactions   The purpose of this study is threefold: first, to identify a scheme for the
determination of the surface energy coefficient a_surf that offers the best
compromise between robustness, precision, and numerical efficiency; second, to
analyze the correlation between values for a_surf and the characteristic
energies of the fission barrier of Pu240; and third, to lay out a procedure how
the deformation properties of the Skyrme energy density functional (EDF) can be
constrained during the parameter fit.
  There are several frequently used possibilities to define and calculate the
surface energy coefficient a_surf of effective interactions. The most direct
access is provided by the model system of semi-infinite nuclear matter, but
a_surf can also be extracted from the systematics of binding energies of finite
nuclei. Calculations can be carried out either self-consistently (HF), which
incorporates quantal shell effects, or in one of the semi-classical Extended
Thomas-Fermi (ETF) or Modified Thomas-Fermi (MTF) approximations.
  The surface energy coefficient of 76 parameterizations of the Skyrme EDF have
been calculated. Values obtained with the HF, ETF and MTF methods are not
identical, but differ by fairly constant systematic offsets.
  Despite having some drawbacks compared to the other methods studied here, the
MTF approach provides sufficiently precise values for a_surf such that it can
be used as a very robust constraint on surface properties during a parameter
fit at negligible additional cost. Through the construction of a series of
eight parameterizations SLy5s1-SLy5s8 of the standard Skyrme EDF with
systematically varied a_surf value it is shown how to arrive at a fit with
realistic deformation properties.
  [Note: The abstract has been abbreviated because of length restrictions
imposed by the arXiv. See the paper for the full abstract.]

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The categories of this paper are: alg-geom
16
The categories of this paper are: stat
22
The categories of this paper are: chao-dyn
19
The categories of this paper are: eess
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The categories of this paper are: q-alg
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The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
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The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
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The categories of this paper are: bayes-an
3
The categories of this paper are: physics
1
The categories of this paper are: cs
4
The categories of this paper are: cond-mat
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The categories of this paper are: math-ph
10
The categories of this paper are: q-bio
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The categories of this paper are: plasm-ph