Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Addition and removal energies of circular quantum dots   We present and compare several many-body methods as applied to
two-dimensional quantum dots with circular symmetry. We calculate the
approximate ground state energy using a harmonic oscillator basis optimized by
Hartree-Fock (HF) theory and further improve the ground state energy using two
post-HF methods: in-medium similarity renormalization group (IM-SRG) and
coupled cluster with singles and doubles (CCSD). With the application of
quasidegenerate perturbation theory (QDPT) or the equations-of-motion (EOM)
method to the results of the previous two methods, we obtain addition and
removal energies as well. Our results are benchmarked against full
configuration interaction (FCI) and diffusion Monte Carlo (DMC) where
available. We examine the rate of convergence and perform extrapolations to the
infinite basis limit using a power-law model.

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The categories of this paper are: hep-ex
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The categories of this paper are: chem-ph
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The categories of this paper are: solv-int
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The categories of this paper are: math
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The categories of this paper are: adap-org
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The categories of this paper are: acc-phys
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The categories of this paper are: alg-geom
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The categories of this paper are: ao-sci
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The categories of this paper are: hep-lat
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The categories of this paper are: supr-con
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The categories of this paper are: q-bio
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The categories of this paper are: hep-th
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The categories of this paper are: plasm-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: gr-qc
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The categories of this paper are: patt-sol