Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Phenomenological Modeling of Photoemission Spectra in Strongly
  Correlated Electron Systems   A phenomenological approach is presented that allows one to model, and
thereby interpret, photoemission spectra of strongly correlated electron
systems. A simple analytical formula for the self-energy is proposed. This
self-energy describes both coherent and incoherent parts of the spectrum
(quasiparticle and Hubbard peaks, respectively). Free parameters in the
expression are determined by fitting the density of states to experimental
photoemission data. An explicit fitting is presented for the
La$_{1-x}$Sr$_x$TiO$_3$ system with $0.08 \le x \le 0.38$. In general, our
phenomenological approach provides information on the effective mass, the
Hubbard interaction, and the spectral weight distribution in different parts of
the spectrum. Limitations of this approach are also discussed.

37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
3
The categories of this paper are: physics
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph