Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Integral relations for three-body continuum states with the adiabatic
  expansion   Application of the Hyperspherical Adiabatic expansion to describe three-body
scattering states suffers the problem of a very slow convergence. Contrary to
what happens for bound states, a huge number of hyperradial equations has to be
solved, and even if done, the extraction of the scattering amplitude is
problematic. In this paper we show how to obtain accurate scattering phase
shifts using the Hyperspherical Adiabatic expansion. To this aim two integral
relations, derived from the Kohn Variational Principle, are used. The
convergence of this procedure is as fast as for bound states.

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The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas
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The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol