Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Coupled-cluster theory for atoms and molecules in strong magnetic fields   An implementation of coupled-cluster (CC) theory to treat atoms and molecules
in finite magnetic fields is presented. The main challenges stem from the
magnetic-field dependence in the Hamiltonian, or, more precisely, the
appearance of the angular momentum operator, due to which the wave function
becomes complex and which introduces a gauge-origin dependence. For this
reason, an implementation of a complex CC code is required together with the
use of gauge-including atomic orbitals to ensure gauge-origin independence.
Results of coupled-cluster singles--doubles--perturbative-triples (CCSD(T))
calculations are presented for atoms and molecules with a focus on the
dependence of correlation and binding energies on the magnetic field.

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The categories of this paper are: plasm-ph
9
The categories of this paper are: nlin
4
The categories of this paper are: cond-mat
37
The categories of this paper are: supr-con
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
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The categories of this paper are: math-ph
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
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The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga
2
The categories of this paper are: math