Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Role of diproton correlation in two-proton emission decay of the $^6$Be
  nucleus   We discuss a role of diproton correlation in two-proton emission from the
ground state of a proton-rich nucleus, $^6$Be. Assuming the three-body
structure of $\alpha + p + p$ configuration, we develop a time-dependent
approach, in which the two-proton emission is described as a time-evolution of
a three-body metastable state. With this method, the dynamics of the two-proton
emission can be intuitively discussed by monitoring the time-dependence of the
two-particle density distribution. With a model Hamiltonian which well
reproduces the experimental two-proton decay width, we show that a strongly
correlated diproton emission is a dominant process in the early stage of the
two-proton emission. When the diproton correlation is absent, the sequential
two-proton emission competes with the diproton emission, and the decay width is
underestimated. These results suggest that the two-proton emission decays
provide a good opportunity to probe the diproton correlation in proton-rich
nuclei beyond the proton drip-line.

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The categories of this paper are: math-ph
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The categories of this paper are: hep-th
16
The categories of this paper are: stat
30
The categories of this paper are: q-alg
2
The categories of this paper are: math
24
The categories of this paper are: dg-ga
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The categories of this paper are: hep-lat
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The categories of this paper are: eess
1
The categories of this paper are: cs
4
The categories of this paper are: cond-mat
29
The categories of this paper are: funct-an
3
The categories of this paper are: physics
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
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The categories of this paper are: mtrl-th
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The categories of this paper are: cmp-lg