Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Application of efficient generator-coordinate subspace-selection
  algorithm to neutrinoless double-$\beta$ decay   The generator coordinate method begins with the variational construction of a
set of non-orthogonal mean-field states that span a subspace of the full
many-body Hilbert space. These states are then often projected onto states with
good quantum numbers to restore symmetries, leading to a set with members that
can be similar to one another, and it is sometimes possible to reduce this set
without greatly affecting results. Here we propose a greedy algorithm that we
call the energy-transition-orthogonality procedure (ENTROP) to select subsets
of important states. As applied here, the approach selects on the basis of
diagonal energy, orthogonality, and contribution to the matrix element that
governs neutrinoless double-$\beta$ decay. We present both shell-model and
preliminary ab initio calculations of this matrix element for the decay of
$^{76}$Ge, with quadrupole deformation parameters and the isoscalar pairing
strength as generator coordinates. ENTROP converges quickly, reducing
significantly the number of basis states needed for an accurate calculation.

15
The categories of this paper are: nucl-ex
24
The categories of this paper are: dg-ga
22
The categories of this paper are: chao-dyn
9
The categories of this paper are: nlin
14
The categories of this paper are: math-ph
20
The categories of this paper are: acc-phys
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
19
The categories of this paper are: eess