Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Momentum-resolved single-particle spectral function for TiOCl from a
  combination of density functional and variational cluster calculations   We present results for the momentum-resolved single-particle spectral
function of the low-dimensional system TiOCl in the insulating state, obtained
by a combination of ab initio Density Functional Theory (DFT) and Variational
Cluster (VCA) calculations. This approach allows to combine a realistic band
structure and a thorough treatment of the strong correlations. We show that it
is important to include a realistic two-dimensional band structure of TiOCl
into the effective strongly-correlated models in order to explain the spectral
weight behavior seen in angle-resolved photoemission (ARPES) experiments. In
particular, we observe that the effect of the interchain couplings is a
considerable redistribution of the spectral weight around the Gamma point from
higher to lower binding energies as compared to a purely one-dimensional model
treatment. Hence, our results support a description of TiOCl as a
two-dimensional compound with strong anisotropy and also set a benchmark on the
spectral features of correlated coupled-chain systems.

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The categories of this paper are: astro-ph
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The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
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The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
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The categories of this paper are: nlin
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
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The categories of this paper are: math
0
The categories of this paper are: hep-ph