Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Microsopic nuclear level densities by the shell model Monte Carlo method   The configuration-interaction shell model approach provides an attractive
framework for the calculation of nuclear level densities in the presence of
correlations, but the large dimensionality of the model space has hindered its
application in mid-mass and heavy nuclei. The shell model Monte Carlo (SMMC)
method permits calculations in model spaces that are many orders of magnitude
larger than spaces that can be treated by conventional diagonalization methods.
We discuss recent progress in the SMMC approach to level densities, and in
particular the calculation of level densities in heavy nuclei. We calculate the
distribution of the axial quadrupole operator in the laboratory frame at finite
temperature and demonstrate that it is a model-independent signature of
deformation in the rotational invariant framework of the shell model. We
propose a method to use these distributions for calculating level densities as
a function of intrinsic deformation.

8
The categories of this paper are: hep-ex
18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol
17
The categories of this paper are: q-fin
14
The categories of this paper are: math-ph
21
The categories of this paper are: adap-org
13
The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
15
The categories of this paper are: nucl-ex
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
29
The categories of this paper are: funct-an
4
The categories of this paper are: cond-mat
23
The categories of this paper are: solv-int
27
The categories of this paper are: comp-gas