Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Precise study of the Efimov three-particle spectrum and structure
  functions within variational approach   A precise study within variational approach of the basic properties of the
three-particle spectrum and structure functions with Gaussian potential near
the critical coupling constant of interaction where the Efimov effect takes
place is carried out. A method is developed to calculate highly excited states
with very small binding energies, and numerical analysis is carried out for the
ground and three excited energy states. For these states, one-particle density
distributions, formfactors, pair correlation functions, and momentum
distributions are calculated. It is found that the second excited state has
already all the basic features of a level from the infinite Efimov series. An
essential asymmetry is found in the position of energy levels with respect to
the critical constant point. A halo-type structure is revealed in the
one-particle density distributions, and formfactors are shown to have specific
dips of finite depth, the number of dips being equal to the number of the
state. The behaviour of pair correlation functions and momentum distributions
is studied for three-particle states.

36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
19
The categories of this paper are: eess
2
The categories of this paper are: math
25
The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga