Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bound states of infinite curved polymer chains   We investigate an infinite array of point interactions of the same strength
in R^d, d=2,3, situated at vertices of a polygonal curve with a fixed edge
length. We demonstrate that if the curve is not a line, but it is
asymptotically straight in a suitable sense, the corresponding Hamiltonian has
bound states. Example is given in which the number of these bound states can
exceed any positive integer.

18
The categories of this paper are: econ
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an