Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fork Tensor Product States - Efficient Three Orbital Real Time DMFT
  Solver   We present a tensor network especially suited for multi-orbital Anderson
impurity models and as an impurity solver for multi-orbital dynamical
mean-field theory (DMFT). The solver works directly on the real-frequency axis
and yields very high spectral resolution at all frequencies. We use a large
number $\left(\mathcal{O}(100)\right)$ of bath sites, and therefore achieve an
accurate representation of the bath. The solver can treat full rotationally
invariant interactions with reasonable numerical effort. We show the efficiency
and accuracy of the method by a benchmark for the testbed material SrVO$_3$.
There we observe multiplet structures in the high-energy spectrum which are
almost impossible to resolve by other multi-orbital methods. The resulting
structure of the Hubbard bands can be described as a broadened atomic spectrum
with rescaled interaction parameters. Additional features emerge when $U$ is
increased. The impurity solver offers a new route to the calculation of precise
real-frequency spectral functions of correlated materials.

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The categories of this paper are: comp-gas
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The categories of this paper are: nlin
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The categories of this paper are: patt-sol
16
The categories of this paper are: stat
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The categories of this paper are: nucl-ex
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The categories of this paper are: econ
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The categories of this paper are: math-ph
0
The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys
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The categories of this paper are: hep-lat
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The categories of this paper are: funct-an
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The categories of this paper are: hep-th
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The categories of this paper are: dg-ga
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The categories of this paper are: atom-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: bayes-an