Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Multi-quantum eigenstates of a linear chain of coupled qubits   We present a technique to identify exact analytic expressions for the
multi-quantum eigenstates of a linear chain of coupled qubits. A choice of
Hilbert subspaces is described which allows an exact solution of the stationary
Schr\"{o}dinger equation without imposing periodic boundary conditions and
without neglecting end effects, fully including the dipole-dipole
nearest-neighbor interaction between the atoms. The treatment is valid for an
arbitrary coherent excitation in the atomic system, any number of atoms, any
size of the chain relative to the resonant wavelength and arbitrary initial
conditions of the atomic system. The procedure we develop is general enough to
be adopted for the study of excitation in an arbitrary array of atoms including
spin chains and one-dimensional Bose-Einstein condensates.

2
The categories of this paper are: math
16
The categories of this paper are: stat
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
14
The categories of this paper are: math-ph
29
The categories of this paper are: funct-an
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org
30
The categories of this paper are: q-alg